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A Windows launch isn’t the end a process — it’s really just the beginning. Microsoft continually works on improving Windows 11 by fixing bugs, releasing security patches, and occasionally adding new features.

In this story we summarize what you need to know about each update released to the public for the most recent version of Windows 11 — currently version 25H2 — over the past year. For each build, we’ve included the date of its release and a link to Microsoft’s announcement about it. The most recent updates appear first.

The easiest way to install updates is via Windows Update. Not sure how? See “How to handle Windows 10 and 11 updates” for full instructions. Note that Windows 11 version 25H2 is being released as a phased rollout and may not be available to you in Windows Update yet.

If you’re still using Windows 10, see “Windows 10: A guide to the updates.” And if you’re looking for information about Insider Program previews for upcoming feature releases of Windows 11, see “Windows 11 Insider Previews: What’s in the latest build?”

Updates for Windows 11 25H2 and 24H2 KB5083631 (OS Builds 26200.8328 and 26100.8328) Preview

Release date: April 30, 2026

This update includes a large number of new features being rolled out gradually, including File Explorer’s ability to handle new archive formats including uu, cpio, xar, and NuGet Packages (nupkg). Windows also gets a new way to monitor agents from the taskbar. It supports agents across first- and third-party apps, with Researcher in the Microsoft 365 Copilot app as the first adopter. 

Also being rolled out gradually is a security improvement that changes how the Windows kernel trusts third‑party drivers. Default trust for cross‑signed drivers is removed, while drivers from the Windows Hardware Compatibility Program (WHCP) and an allow list of trusted legacy drivers remain allowed. 

The update also includes several changes available immediately, including one that increases coverage of devices eligible to automatically receive new Secure Boot certificates. Devices receive the new certificates only after demonstrating sufficient successful update signals, maintaining a controlled and phased rollout. For more information, see Windows Secure Boot certificate expiration and CA updates.

A bug in the Remote Desktop Connection security warning dialog is being fixed immediately. Previously, the dialog could have rendered incorrectly in a multi-monitor scenario when the monitors had different scaling settings.

(Get more info about KB5083631 Preview.)

KB5083769 (OS Builds 26200.8246 and 26100.8246)

Release date: April 14, 2026

This update fixes several bugs, including one that caused device reset to fail when using the “Keep my files” or “Remove everything” options. It also improves protection against phishing attacks that use Remote Desktop (.rdp) files. For more information, see Understanding security warnings when opening Remote Desktop (RDP) files.

It also enables dynamic status reporting for Secure Boot states in Settings > Update & Security > Windows Security, with a green, yellow, or red badge indicating your current Secure Boot status. See Secure Boot certificate update status in the Windows Security app for more information.

The build also has a wide variety of security updates. For details, see Microsoft’s Security Update Guide and April 2026 Security Updates.

What IT needs to know: Because this is a security update, it should be applied relatively soon. Over the next few weeks, check for reports about problematic issues, and if all seems well, apply the update.

Update, April 15: Microsoft has confirmed an issue with this release: “Devices with an unrecommended BitLocker Group Policy configuration might be required to enter their BitLocker recovery key.” See Microsoft’s KB5083769 information page for details and workarounds.

(Get more info about KB5083769.)

KB5086672 (OS Builds 26200.8117 and 26100.8117) Out-of-band

Release date: March 31, 2026

This update fixes a bug in which some devices running Windows 11 version 25H2 or 24H2 encountered the following error while installing the Windows preview update KB5079391 (listed below): “Some update files are missing or have problems. We’ll try to download the update again later. Error code: (0x80073712).”

(Get more info about Windows 11 KB5086672 Out-of-band.)

KB5079391 (OS Builds 26200.8116 and 26100.8116) Preview

Release date: March 26, 2026

This update includes a variety of new features being rolled out gradually, including one that allows you to turn Smart App Control (SAC) on or off without needing a clean install. To make changes, go to Settings > Windows Security > App & Browser Control > Smart App Control settings. When turned on, SAC helps block untrusted or potentially harmful apps. To learn more, see App & Browser Control in the Windows Security App.

The build also includes several improvements and bug fixes, including one that improves Application ID tagging in Application Control for Business policies. With this update, the system identifies which apps should receive tags more accurately and behaves more reliably, Microsoft says.

(Get more info about Windows 11 KB5079391 Preview.)

KB5085516 (OS Builds 26200.8039 and 26100.8039) Out-of-band

Release date: March 21, 2026

This update fixes a bug some users experienced when signing in to apps with a Microsoft account. Even when the device had a working internet connection, a “no Internet” error appeared during sign-in and prevented access to Microsoft services and apps such as Microsoft Teams Free and OneDrive.

(Get more info about KB5085516 Out-of-band.)

KB5079473 (OS Builds 26200.8037 and 26100.8037)

Release date: March 10, 2026

This build improves how Windows Defender Application Control (WDAC) handles COM objects allowlisting policies. COM objects were blocked when the endpoint security policy was set higher than the allowlisting policy. With this update, COM objects are allowed as expected.​ The build also introduces additional high confidence device targeting data to Windows quality updates, increasing coverage of devices eligible to automatically receive new Secure Boot certificates.

It also has a wide variety of security updates. For details, see Microsoft’s Security Update Guide and March 2026 Security Updates.

What IT needs to know: Because this is a security update, it should be applied relatively soon. Over the next few weeks, check for reports about problematic issues, and if all seems well, apply the update.

(Get more info about KB5079473.)

KB5077241 (OS Builds 26200.7922 and 26100.7922) Preview

Release date: February 24, 2026

This update includes a variety of new features being rolled out gradually, including one in which Quick Machine Recovery (QMR) turns on automatically for Windows Professional devices that are not domain‑joined and not enrolled in enterprise endpoint management. For domain‑joined or enterprise managed devices, QMR stays off unless it is enabled by the organization.

It also includes several features available immediately, including one in which Windows quality updates include additional high-confidence device-targeting data, increasing coverage of devices eligible to automatically receive new Secure Boot certificates. Devices receive the new certificates only after demonstrating sufficient successful update signals, maintaining a controlled and phased rollout.

(Get more info about KB5077241 Preview.)

KB5077181 (OS Builds 26200.7840 and 26100.7840)

Release date: February 10, 2025

This Patch Tuesday build fixes several bugs, including one that prevented some devices from connecting to certain WPA3‑Personal Wi‑Fi networks. It also includes a broad set of targeting data that identifies devices and their ability to receive new Secure Boot certificates. Devices will receive the new certificates only after they show sufficient successful update signals, which helps ensure a safe and phased rollout.

It also has a wide variety of security updates. For details, see Microsoft’s Security Update Guide and February 2026 Security Updates.

What IT needs to know: Because this is a security update, it should be applied relatively soon. Over the next few weeks, check for reports about problematic issues, and if all seems well, apply the update.

(Get more info about KB5077181.)

KB5074105 (OS Builds 26200.7705 and 26100.7705) Preview

Release date: January 29, 2025

In this build, several new features are immediately available, including one for Data Protection Application Programming Interface (DPAPI) domain backup key management. Administrators can now set how often keys rotate automatically. This strengthens cryptographic security and reduces reliance on older encryption algorithms.

One new feature is being gradually rolled out: The Settings Agent now supports more languages, with expanded support for German, Portuguese, Spanish, Korean, Japanese, Hindi, Italian, and Chinese (Simplified).

A variety of bugs have been fixed, including one that caused some systems to stop responding during startup when Windows Boot Manager debugging was enabled.

Get more info about KB5074105 Preview.)

KB5078127 (OS Builds 26200.7628 and 26100.7628) Out-of-band

Release date: January 24, 2026

This update fixes a bug in which some applications were unresponsive or encountered unexpected errors when opening files from or saving files to cloud-based storage, such as OneDrive or Dropbox. In certain Outlook configurations that store PST files on OneDrive, Outlook sometimes hung and failed to reopen unless the process was terminated or the system was restarted. Users may have also experienced missing sent items or previously downloaded emails.

(Get more info about KB5078127 Out-of-band.)

KB5077744 (OS Builds 26200.7627 and 26100.7627) Out-of-band

Release date: January 17, 2026

This update fixes a bug in which some users experienced sign-in failures during Remote Desktop connections. This issue affected authentication steps for different Remote Desktop applications on Windows such as the Windows App.

There is one known issue in this build, in which the password icon might be missing or invisible in the lock screen sign-in options.

Get more info about KB5077744 Out-of-band.)

KB5074109 (OS Builds 26200.7623 and 26100.7623)

Release date: January 13, 2026

This build fixes several bugs, including one in which you might experience RemoteApp ​​​​​​​connection failures in Azure Virtual Desktop (AVD) environments. This might occur after installing KB5070311. It also updates the Windows core component, WinSqlite3.dll. Previously, some security software might have detected this component as vulnerable. 

It also has a wide variety of security updates. For details, see Microsoft’s Security Update Guide and January 2026 Security Updates.

It has one known issue, in which you might notice that the password icon is not visible in the sign-in options on the lock screen. If you hover over the space where the icon should appear, you’ll see that the password button is still available. Select this placeholder to open the password text box and enter your password. After entering your password, you can sign in normally. People using Windows Home or Pro editions on personal devices are very unlikely to experience this issue. This issue primarily affects enterprise or managed IT environments.

What IT needs to know: Because this is a security update, it should be applied relatively soon. Over the next few weeks, check for reports about problematic issues, and if all seems well, apply the update.

(Get more info about KB5074109.)

KB5072033 (OS Builds 26200.7462 and 26100.7462)

Release date: December 9, 2025

This build fixes several bugs, including one in which File Explorer briefly flashed white when you navigated between pages.

It also has a wide variety of security updates. For details, see Microsoft’s Security Update Guide and December 2025 Security Updates.

It has one known issue, in which the password icon might not be visible in the sign-in options on the lock screen. If you hover over the space where the icon should appear, you’ll see that the password button is still available. Select this placeholder to open the password text box and enter your password. After entering your password, you can sign in normally. People using Windows Home or Pro editions on personal devices are very unlikely to experience this issue — it primarily affects enterprise or managed IT environments.

What IT needs to know: Because this is a security update, it should be applied relatively soon. Over the next few weeks, check for reports about problematic issues, and if all seems well, apply the update.

(Get more info about KB5072033.)

KB5070311 (OS Builds 26200.7309 and 26100.7309) Preview

Release date: December 1, 2025

A variety of new features are being gradually rolled out in this build, including several for Copilot+ PCs. The Click to Do context menu in Copilot+ PCs now has a streamlined design that makes it easier to access frequently used actions such as Copy, Save, Share, and Open. In Copilot+ PCs you can now also use Windows Studio Effects, which provide AI-powered camera enhancements, on an additional camera such as a USB webcam or your laptop’s built-in rear camera.

New features being rolled out gradually to all Windows 11 PCs include a simplified File Explorer context menu for easier navigation. Common actions like Share, Copy, and Move now appear in a single organized menu.

A variety of bugs have been fixed for all PCs, including one in which the Local Security Authority Subsystem Service (LSASS) could become unstable due to an access violation.

There are two known issues in this build, one in which when opening File Explorer in dark mode, the window might briefly display a blank white screen before loading files and folders. In addition, the password icon is missing or invisible in the lockscreen sign-in options on some PCs. (Here’s a workaround for the latter bug.)

Get more info about KB5070311 Preview.)

KB5068861 (OS Builds 26200.7171 and 26100.7171)

Release date: November 11, 2025

This Patch Tuesday build fixes several bugs, including one in which closing Task Manager with the Close button didn’t fully end the process, leaving background instances that could slow performance over time.

It also has a wide variety of security updates. For details, see Microsoft’s Security Update Guide and November 2025 Security Updates.

What IT needs to know: Because this is a security update, it should be applied relatively soon. Over the next few weeks, check for reports about problematic issues, and if all seems well, apply the update.

(Get more info about KB5068861.)

KB5067036 (OS Builds 26200.7019 and 26100.7019) Preview

Release date: October 28, 2025

A variety of new features are being gradually rolled out in this build, including several for Click to Do on Copilot+ PCs — notably a streamlined interaction between Click to Do and Copilot. You can now type a custom prompt directly into the text box, which sends your prompt and selected on-screen content to Copilot. Suggested prompts appear below the text box and are available for text selections in English, Spanish, and French. 

New features are being gradually rolled out for all Windows 11 PCs as well, including a redesigned Start menu, which includes scrollable “All” section and category and grid views. The menu now adapts to your screen size.

A variety of bugs have been fixed, including one in which text sometimes didn’t render correctly when editing content within a multiline text box in certain apps.

Get more info about KB5067036 Preview.)

KB5070773 (OS Builds 26200.6901 and 26100.6901) Out-of-band

Release date: October 20, 2025

This build fixes one bug, in which USB devices, such as keyboards and mice, did not function in the Windows Recovery Environment (WinRE). This issue prevented navigation of any of the recovery options within WinRE.

This build has one known issue: some digital TV and Blu-ray/DVD apps might not play protected content as expected after installing the August 29, 2025, Windows non-security preview update (KB5064081) or later updates. Apps that use Enhanced Video Renderer with HDCP enforcement or Digital Rights Management (DRM) for digital audio might show copyright protection errors, frequent playback interruptions, unexpected stops, or black screens. Streaming services are not affected. 

(Get more info about KB5070773 Out-of-band.)

KB5066791 (OS Builds 19044.6456 and 19045.6456)

Release date: October 14, 2025

This build fixes several bugs, including one that caused the print preview screen to stop responding in Chromium-based browsers.

It also has a wide variety of security updates. For details, see Microsoft’s Security Update Guide and October 2025 Security Updates.

What IT needs to know: Because this is a security update, it should be applied relatively soon. Over the next few weeks, check for reports about problematic issues, and if all seems well, apply the update.

(Get more info about KB5066791.)

KB5065789 (OS Builds 26200.6725 and 26100.6725) Preview

Release date: September 29, 2025

This build gradually rolls out a wide variety of new features, including one in which you can use AI actions in File Explorer to edit images or summarize documents. To do it, right-click (or press Shift + F10 on the keyboard) on the file and select AI actions. 

Several bugs have also been fixed, including one in which you might not have been able to connect to shared files and folders if you were using the Server Message Block (SMB) v1 protocol on NetBIOS over TCP/IP NetBIOS (NetBT).

(Get more info about KB5065789 Preview.)

Windows 11 25H2

At the end of September, Microsoft upgraded Windows 11 from version 24H2 to 25H2, in a slow rollout that could take months to complete. Typically in the past, Microsoft would introduce new features in a once-a-year update like this. That’s not the case with 25H2, though.

Microsoft has been introducing new features in smaller updates all year round, so 25H2 doesn’t include any major new features. Rather, it includes all the new features that have accumulated in all those smaller updates.

As the company explains, “While this update doesn’t introduce major new features, it activates enhancements that have been gradually rolled out over the past year ensuring your device is up to date with the latest refinements.”

Here are some of the most important features in 25H2 that have been introduced for end users and IT pros since 24H2 was released last fall:

New features for users:

• File Explorer has several useful new features, notably AI actions, which can edit images or summarize documents. AI options such as Blur background, Erase objects, and Remove background are all now displayed in the context menu.
• Task Manager gets a number of minor tweaks, including performance improvements when changing the sort order of processes.
• You can now display the apps that have recently used on-device generative AI models provided by Windows. You can also choose which apps are permitted to use the generative AI technologies. To do that and more, go to Settings > Privacy & security > Text and Image Generation.

New features for IT:

• IT admins can use policy-based tools to easily remove preinstalled Microsoft Store apps from Enterprise and Education editions of Windows 11, version 25H2 and later. This can streamline device provisioning and prevent removed apps such as Microsoft Clipchamp, Media Player, and Microsoft Teams from being reinstalled. For more information, see Policy-based removal of preinstalled Microsoft Store apps and RemoveDefaultMicrosoftStorePackages in the ApplicationManagement Policy CSP.
• Enterprise access points now support Wi-Fi 7, which enables increased speeds, greater throughput, improved reliability, and enhanced security. For details, see https://aka.ms/WiFi7forEnterprise.
• Windows Backup for Organizations is now generally available.
• A new feature called Quick Machine Recovery can recover Windows devices when they encounter critical errors that prevent them from booting. Quick machine recovery searches for remediations in the cloud and recovers from widespread boot failures, reducing the burden on IT admins on cases when multiple devices are affected. For more information, see Computerworld’s Quick Machine Recovery explainer.

Updates for Windows 11 24H2 KB5068221 (OS Build 26100.6588) Out-of-band

Release date: September 22, 2025

This update fixes a bug that affected Microsoft Office applications running in Microsoft Application Virtualization (App-V) environments. The failure occurred due to a double handle closure in the AppVEntSubsystems32 or AppVEntSubsystems64 system component.

There is one issue in this build: you might fail to connect to shared files and folders using the Server Message Block (SMB) v1 protocol on NetBIOS over TCP/IP (NetBT). This issue can occur if either the SMB client or the SMB server has the September 2025 security update installed.

(Get more info about KB5068221 (OS Build 26100.6588) Out-of-band).

KB5065426 (OS Build 26100.6584)

Release date: September 9, 2025

This build fixes several bugs, including one that caused non-admin users to receive unexpected User Account Control (UAC) prompts when MSI installers performed certain custom actions, such as configuration or repair operations in the foreground or background during the initial installation of an application.

The build also has a wide variety of security updates. For details, see Microsoft’s Security Update Guide and September 2025 Security Updates.

What IT needs to know: Because this is a security update, it should be applied relatively soon. Over the next few weeks, check for reports about problematic issues, and if all seems well, apply the update.

(Get more info about KB5065426.)

KB5064081 (OS Build 26100.5074) Preview

Release date: August 29, 2025

A wide variety of new features are being gradually rolled out in this build, including a new personalized homepage in Windows Recall that displays your recent activity and top-used apps and websites (available only in Copilot+ PCs). Among the changes rolling out to all users is a new grid view for Search from the Windows taskbar that helps you more quickly and accurately identify the desired image within your search.

Several bugs have also been fixed, including one in which some system recovery features did not work properly due to a temporary file sharing conflict. This affected certain device management tools and disrupted key functions on some devices.

(Get more info about KB5064081 Preview.)

KB5063878 (OS Build 26100.4946)

Release date: August 12, 2025

This build fixes a bug that caused delays during sign-in on new devices. The delay was due to certain preinstalled packages. It also has a wide variety of security updates. For details, see Microsoft’s Security Update Guide and August 2025 Security Updates.

What IT needs to know: Because this is a security update, it should be applied relatively soon. Over the next few weeks, check for reports about problematic issues, and if all seems well, apply the update.

(Get more info about KB5063878.)

KB5062660 (OS Build 26100.4770) Preview

Release date: July 22, 2025

A wide variety of new features are being gradually rolled out in this build, including a new agent in Copilot+ PCs that is designed to help you find and change settings on your PC. You can describe what you need help with, such as “how to control my PC by voice” or “my mouse pointer is too small,” and the agent will suggest steps to resolve the issue. The agent uses AI on your PC to understand your request and, with your permission, can automate and complete tasks for you. It is rolling out to Snapdragon-powered Copilot+ PCs now, with support for AMD and Intel PCs coming soon. 

Several bugs have also been fixed, including one in which If you have an app pinned to your desktop and it updates, the app icon might not display correctly and instead show a white page.

(Get more info about KB5062660 Preview.)

KB5064489 (OS Build 26100.4656) Out-of-band

Release date: July 13, 2025

This update fixes a bug that prevented some virtual machines (VMs) from starting when Virtualization-Based Security (VBS) was enabled. It affected VMs using version 8.0 (a non-default version) where VBS was offered by the host. In Azure, this applies to standard (non–Trusted Launch) General Enterprise (GE) VMs running on older VM SKUs. The problem was caused by a secure kernel initialization issue.

(Get more info about KB5064489 Out-of-band.)

KB5062553 (OS Build 26100.4652)

Release date: July 8, 2025

The build fixes several bugs, including one in which notification sounds didn’t play. Affected sounds included those for on-screen alerts, volume adjustments, and sign-in. It also has a wide variety of security updates. For details, see Microsoft’s Security Update Guide and July 2025 Security Updates.

What IT needs to know: Because this is a security update, it should be applied relatively soon. Over the next few weeks, check for reports about problematic issues, and if all seems well, apply the update.

(Get more info about KB5062553.)

KB5060829 (OS Build 26100.4484) Preview

Release date: June 26, 2025

A wide variety of new features are being gradually rolled out in this build, including a new Settings home page that includes enterprise-specific device info cards for commercial customers on PCs managed by an IT administrator. The taskbar also now resizes icons to fit more apps when space runs low.

Users in the European Economic Area will see several small changes related to default browsers, such as mapping additional file and link types to the default browser and pinning it to the taskbar and Start menu.

A variety of bugs have also been fixed, including one that prevented the automatic renewal of expiring certificates in Windows Hello for Business.

There is one known issue in this build, in which blurry or unclear CJK (Chinese, Japanese, Korean) text appears when displayed at 96 DPI (100% scaling) in Chromium-based browsers such as Microsoft Edge and Google Chrome. 

(Get more info about KB5060829 Preview.)

KB5063060 (OS Build 26100.4351) Out-of-band

Release date: June 11, 2025

This out-of-band update replaces the KB5060842 Patch Tuesday release, fixing a bug in which Windows sometimes restarted unexpectedly when users opened games that use the Easy Anti-Cheat service. Easy Anti-Cheat automatically installs with certain games to enhance security and prevent cheating in multiplayer online PC games. 

Note: In this build there are reports of blurry or unclear CJK (Chinese, Japanese, Korean) text when displayed at 96 DPI (100% scaling) in Chromium-based browsers such as Microsoft Edge and Google Chrome. The issue is due to limited pixel density at 96 DPI, which can reduce the clarity and alignment of CJK characters. Increasing the display scaling improves clarity by enhancing text rendering.

(Get more info about KB5063060 Out-of-band.)

KB5060842 (OS Build 26100.4349)

Release date: June 10, 2025

After installing this update, Windows will retain system restore points for 60 days only. Restore points older than 60 days are not available. This 60-day limit will also apply to future versions of Windows 11, version 24H2.

The build fixes a bug that prevented users from signing in with self-signed certificates when using Windows Hello for Business with the Key Trust model.​​​​​​​ It also has a wide variety of security updates. For details, see Microsoft’s Security Update Guide and June 2025 Security Updates.

Note: In this build there are reports of blurry or unclear CJK (Chinese, Japanese, Korean) text when displayed at 96 DPI (100% scaling) in Chromium-based browsers such as Microsoft Edge and Google Chrome. The issue is due to limited pixel density at 96 DPI, which can reduce the clarity and alignment of CJK characters. Increasing the display scaling improves clarity by enhancing text rendering.

What IT needs to know: Because this is a security update, it should be applied relatively soon. Over the next few weeks, check for reports about problematic issues, and if all seems well, apply the update.

(Get more info about KB5060842.)

KB5058499 (OS Build 26100.4202) Preview

Release date: May 27, 2025

A wide variety of new features are being gradually rolled out in this build, including one in which Click to Do gets the new Ask Copilot action. When you highlight text or an image, Click to Do offers the Ask Copilot option. Selecting it opens Microsoft Copilot with your content in the prompt box. You can send the selected text or image directly to the Copilot app to complete your prompt.

A variety of bugs have also been fixed, including one in which devices with BitLocker on removable drives could encounter a blue screen error after resuming from sleep or hybrid-booting.

(Get more info about KB5058499 Preview.)

KB5061977 (OS Build 26100.4066) 

Release date: May 27, 2025

This out-of-band update fixes a bug in the direct send path for a guest physical address (GPA). This issue caused confidential virtual machines running on Hyper-V with Windows Server 2022 to intermittently stop responding or restart unexpectedly. As a result, service availability was affected, and manual intervention was required. This problem primarily impacted Azure confidential VMs.

(Get more info about KB5061977.)

KB5058411 (OS Build 26100.4061)

Release date: May 13, 2025

This update fixes two bugs, one in which your microphone might have muted unexpectedly, and the other in which the eye controller app didn’t launch. It also has a wide variety of security updates. For details, see Microsoft’s Security Update Guide and May 2025 Security Updates.

What IT needs to know: Because this is a security update, it should be applied relatively soon. Over the next few weeks, check for reports about problematic issues, and if all seems well, apply the update.

(Get more info about KB5058411.)

KB5055627 (OS Build 26100.3915) Preview

Release date: April 25, 2025

This build gradually rolls out several new features for Copilot+ PCs, including a preview of Windows Recall. When you opt in, Recall takes snapshots of your activity so you can quickly find and go back to what you have seen before on your PC. With it, you can use a timeline to find the content you remember seeing.

Copilot+ PCs also get a new natural-language Windows search in which you can search for anything on your PC without having to remember specific file names, exact words in file content, or settings names. Just describe what you’re looking for. On Copilot+ PCs, you can also more easily find photos stored and saved in the cloud by typing your own words (like “summer picnics”) in the search box at the upper-right corner of File Explorer. 

All PCs get a number of new features, including speech recap, in which you can keep track of what Narrator has spoken and access it for quick reference. With speech recap, you can quickly access spoken content, follow along with live transcription, and copy what Narrator last said using keyboard shortcuts.

A variety of bugs are being fixed, including one in which some devices experienced intermittent internet connections when resuming from sleep mode. Several AI components have also been updated.

There are two known issues in this build, including one in which players on Arm devices are unable to download and play Roblox from the Microsoft Store on Windows.

(Get more info about KB5055627 Preview.)

KB5055523 (OS Build 26100.3775)

Release date: April 8, 2025

This update includes a wide variety of security updates. For details, see Microsoft’s Security Update Guide and April 2025 Security Updates. 

What IT needs to know: Because this is a security update, it should be applied relatively soon. Over the next few weeks, check for reports about problematic issues, and if all seems well, apply the update.

There are two known issues in this build, including one in which players on Arm devices are unable to download and play Roblox via the Microsoft Store on Windows. 

(Get more info about KB5055523.)

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Na všech herních platformách je každou chvíli nějaká slevová akce. Každý týden proto vybíráme ty nejatraktivnější, které by vám neměly uniknout. Pokud chcete získat hry zdarma nebo s výhodnou slevou, podívejte se na aktuální přehled akcí!

Cloudflare is giving AI agents full autonomy to spin up new apps.

Starting today, agents working on behalf of humans can create a Cloudflare account, begin a paid subscription, register a domain, and then receive an API token to let them immediately deploy code.

To kick things off, human users must first accept the cloud company’s terms of service. From there, though, their role in the loop is optional; they don’t have to return to the dashboard, copy and paste API tokens, or enter credit card details. The AI agent just does its thing behind the scenes and has everything it needs to deploy “in one shot,” according to Cloudflare.

While this could be a boon to developers and product builders, it also signals a larger, concerning trend of over-trust in autonomous tools, to the detriment of governance and security.

For example, noted David Shipley of Beauceron Security, cyber criminals are being forced to constantly set up new infrastructure as security firms and law enforcement fight back to block online attacks and scams. “Making it even faster to build new infrastructure and deploy it quickly is a huge win for them,” he said.

Giving agents the OAuth keys

Cloudflare co-designed the new protocol in partnership with Stripe, building upon the Cloudflare Code Mode MCP server and Agent Skills. Any platform with signed-in users can integrate it with “zero friction” for the user, Cloudflare product managers Sid Chatterjee and Brendan Irvine-Broque wrote in a blog post.

The new protocol is part of Stripe Projects (still in beta), which allows humans and their agents to provision multiple services, including AgentMail, Supabase, Hugging Face, Twilio, and a couple of dozen others, generate and store credentials, and manage usage and billing from their command line interface (CLI). An agent is given an initial $100 to spend per month, per provider.

Users need only install the Stripe CLI with the Stripe Projects plugin, login to Stripe, start a new project, prompt an agent to build something new, and deploy it to a new domain. If their Stripe login email is associated with a Cloudflare account, an OAuth flow will kick off; otherwise Cloudflare will automatically create an account for the user and their agent.

From there, the autonomous agent will build and deploy a site to a new Cloudflare account, then use the Stripe Projects CLI to register the domain. Once deployed, the app will run on the newly-registered domain.

Along the way, the agent will prompt for input and approval “when necessary,” for instance, when there’s no linked payment method. As Cloudflare notes, the agent goes from “literal zero” to full deployment.

To build momentum, the company is offering $100,000 in Cloudflare credits to startups that make use of the new capability via Stripe Atlas, which helps companies incorporate in Delaware, set up banking, and engage in fundraising.

How the agent takes action

Agents interact with Stripe and Cloudflare in three steps: discovery (the agent calls a command to query the catalog of available services); authorization (the platform validates identity and issues credentials); and payment (the platform provides a payment token that providers use to bill humans when their agents start subscriptions and make purchases).

Cloudflare emphasizes that this process builds on standards like OAuth, the OpenID Connect (OIDC) identity layer, and payment tokenization, but removes steps that would otherwise require human intervention.

During the discovery phase, agents call the Stripe Projects catalog command, then choose among available services based on human commands and preferences. However, “the user needs no prior knowledge of what services are offered by which providers, and does not need to provide any input,” Chatterjee and Irvine-Broque explained.

From there, Stripe acts as the identity provider, and credentials are securely stored and available for agents that need to make authenticated requests to Cloudflare. Stripe sets a default $100 monthly maximum that an agent can spend on any one provider. Humans can raise this limit and set up budget alerts as required.

The platform, said Cloudflare, acts as the orchestrator for signed-in users. Agents make one API call to provision a domain, storage bucket, and sandbox, then receive an authorization token.

The company argued that the new protocol standardizes what are typically “one off or bespoke” cross-product integrations. It uses OAuth, and extends further into payments and account creation in a way that “treats agents as a first-class concern.”

Concerns around security, operations

The trend of people buying products “wherever they are” will become ever more widespread, noted Shashi Bellamkonda, a principal research director at Info-Tech Research Group.

For instance, Uber has announced an Expedia integration for hotel bookings that will make it an ‘everything app.’ Other vendors are similarly expanding their partner ecosystems, because obtaining customers via other established platforms as well as their own is more cost-efficient, and “generally results in a higher lifetime value,” said Bellamkonda.

“This is Cloudflare turning every partner with signed-in users into a sales channel, and that is how you grow revenue in a developer market,” he said.

Beauceron’s Shipley agreed that Cloudflare is the “big winner” here. “Making it faster for anyone to buy your service and get using it is technology platform Nirvana.”

It’s “super cool, bleeding edge” and in theory, for legitimate developers becomes part of the even more automated build process, he said; “Vibe coders will rejoice.” But, he noted, so will cyber crooks.

Further, Bellamkonda pointed out, from an operational perspective, this could create added complexity for each vendor’s partner network when it comes to transaction execution and accountability. If issues related to provisioning or billing transactions arise, businesses must have a clearly defined process for resolving them with all parties.

“This will require considerable upfront thought on developing these comparatively new business models,” Bellamkonda said.

This article originally appeared on InfoWorld.

The wave of supply chain attacks aimed at security and developer tools has washed up more victims, namely SAP and Intercom npm packages, plus the lightning PyPI package. The newly compromised packages as of Thursday include [email protected] (according to Google-owned Wiz) and [email protected] (says supply-chain security firm Socket) and [email protected] and 2.6.3. Attackers infected all versions with the same credential-stealing malware that, on Wednesday, poisoned multiple npm packages associated with SAP's JavaScript and cloud application development ecosystem. The SAP-related compromise is a Shai-Hulud-worm style campaign that calls itself Mini Shai-Hulud. So far, these SAP-related npm packages include: [email protected] @cap-js/[email protected] @cap-js/[email protected] @cap-js/[email protected] Collectively, these four packages receive about 572,000 weekly downloads and are widely used by developers building cloud applications. SAP did not answer The Register's questions about the compromise and instead sent us this statement: "A security note is published and available for SAP customers and partners." The note is only accessible to logged-in customers. These latest offensives are called "Mini Shai-Hulud worm” attacks because of similarities to the earlier self-propagating Shai-Hulud malware that targeted npm packages. Both Wiz and Socket attributed the SAP compromise to TeamPCP – the cybercrime crew linked to the earlier Checkmarx, Bitwarden, Telnyx, LiteLLM, and Aqua Security Trivy infections. The two security shops also note that the Thursday attacks on the Intercom and lightning packages appear to contain the same malicious code seen in the SAP operation. Here's what has happened in the world of supply-chain attacks over the past 48 hours. SAP-related npm packages On April 29, TeamPCP compromised four official npm packages from the SAP JavaScript and cloud application development ecosystem and published the poisoned releases between 09:55 and 12:14 UTC. The compromised packages contain malicious preinstall scripts set to execute automatically on every npm install, and run attacker-controlled code before any application code runs. This new campaign deploys a multi-stage payload that steals developer secrets, self-propagates, encrypts all the stolen goods, and then exfiltrates the now-locked secrets into a new GitHub repository under the victim's own account. "The second-stage payload is a credential stealer and propagation framework designed to target both developer environments and CI/CD pipelines," the Wiz kids said on Thursday. "It collects sensitive data including GitHub tokens, npm credentials, cloud secrets (AWS, Azure, GCP), Kubernetes tokens, and GitHub Actions secrets – leveraging advanced techniques such as extracting secrets from runner memory. Exfiltration occurs via public GitHub repositories, where it posts encrypted payloads. Additionally, the malware includes propagation logic to infect additional repositories and package distributions." Plus PyPI package lightning Then on Thursday, an additional package was poisoned to execute credential-stealing malware on import. Up first: PyPI package Lightning versions 2.6.2 and 2.6.3. Lightning is a widely used deep learning framework for training and deploying AI products. Developers download it hundreds of thousands of times every day. "The obfuscated JavaScript payload contains many similarities to the Shai-Hulud attacks, overlapping in targeted tokens, credentials and obfuscation methods. Socket also identified signs that router_runtime.js both poisons GitHub repositories and infects developer npm packages," according to Socket, which also published a separate Mini Shai-Hulud supply-chain campaign page that it updates as new information comes to light. And Intercom's npm package Also on Thursday: Socket and Wiz sounded the alarm on a new compromise of the intercom-client npm package. Intercom is a customer communications platform, and intercom-client is a widely used official SDK for Intercom's API. It sees about 360,000 weekly downloads, and npm lists more than 100 dependent projects. However, as Socket notes, the real exposure likely extends beyond these direct dependencies because the package is commonly installed in backend services, developer environments, and CI/CD pipelines that integrate with Intercom's API. "The attack closely resembles the [email protected] PyPI attack from earlier today, as well as the TeamPCP-linked supply chain campaign we reported yesterday affecting SAP CAP and Cloud MTA npm packages," Socket wrote. Neither Intercom nor Lightning immediately responded to The Register's requests for comment. We will update this story when we hear back from any of the compromised organizations. ®

Mini Shai-Hulud caught spreading credential-stealing malware

The wave of supply chain attacks aimed at security and developer tools has washed up more victims, namely SAP and Intercom npm packages, plus the lightning PyPI package.…

Imagination may have more to do with the brain activity it silences than the activity it creates.

Your brain is currently expending about a fifth of your body’s energy, and almost none of that is being used for what you’re doing right now. Reading these words, feeling the weight of your body in a chair—all of this together barely changes the rate at which your brain consumes energy, perhaps by as little as 1 percent.

The other 99 percent is used on the activity the brain generates on its own: neurons (nerve cells) firing and signaling to each other regardless of whether you’re thinking hard, watching television, dreaming, or simply closing your eyes.

Even in the brain areas dedicated to vision, the visuals coming in through your eyes shape the activity of your neurons less than this internal ongoing action.

In a paper recently published in Psychological Review, we argue that our imagination sculpts the images we see in our mind’s eye by carving into this background brain activity. In fact, imagination may have more to do with the brain activity it silences than with the activity it creates.

Imagining as Seeing in Reverse

Consider how “seeing” is understood to work. Light enters the eyes and sparks neural signals. These travel through a sequence of brain regions dedicated to vision, each building on the work of the last.

The earliest regions pick out simple features such as edges and lines. The next combine those into shapes. The ones after that recognize objects, and those at the top of the sequence assemble whole faces and scenes.

Neuroscientists call this “feedforward activity”—the gradual transformation of raw light into something you can name, whether it’s a dog, a friend, or both.

In brain science, the standard view is that visual imagination is this original seeing process run in reverse, from within your mind rather than from light entering your eyes.

So, when you hold the face of a friend in mind, you start with an abstract idea of them—a memory or a name, pulled from the filing cabinet of regions that sit beyond the visual system itself.

That idea travels back down through the visual sequence into the early visual areas, which serve as your brain’s workshop where a face would normally be reconstructed from its parts—the curve of a jawline, the specific shade of an eye. These downward signals are called “feedback activity.”

A Signal Through the Static

However, prior research shows this feedback activity doesn’t drive visual neurons to fire in the same way as when you actually see something.

At least in the brain regions early in the vision process, feedback instead modulates brain activity. This means it increases or decreases the activity of the brain cells, reshaping what those neurons are already doing.

Even behind closed eyes, early visual brain areas keep producing shifting patterns of neural activity resembling those the brain uses to process real vision.

Imagination doesn’t need to build a face from scratch. The raw material is already there. In the internal rumblings of your visual areas, fragments of every face you know are drifting through at low volume. Your friend’s face, even now, is passing through in pieces, scattered and unrecognised. What imagining does is hold still the currents that would otherwise carry those pieces away.

All that’s needed is a small, targeted suppression of neurons that are pulled by brain activity in a different direction, and your friend’s face settles out of the noise, like a signal carving its way through static.

Steering the Brain

In mice, artificially switching on as few as 14 neurons in a sensory brain region is enough for the animal to notice it and lick a sugar-water spout in response. This shows how small an intervention in the brain can be while still steering behavior.

While we don’t know how many neurons are needed to steer internal activity into a conscious experience of imagination in humans, growing evidence shows the importance of dampening neural activity.

In our earlier experiments, when people imagined something, the fingerprint it left on their behavior matched suppression of neuronal activity—not firing. Other researchers have since found the same pattern.

Other lines of evidence strengthen our theory, too. About one in 100 people have aphantasia, which means they can’t form mental images at all. One in 30 form these images so vividly they approach the intensity of images we actually see, known as hyperphantasia.

Research has found that people with weaker mental imagery have more excitable early visual areas, where neurons fire more readily on their own. This is consistent with a visual system whose spontaneous patterns are harder to hold in shape.

Taking all this together, the spontaneous activity reshaping hypothesis—our new theory that imagination carves images out of the steady stream of ongoing brain activity—explains why imagination usually feels weaker than sight. It also explains why we rarely lose track of which is which.

Visual perception arrives with a strength and regularity the brain’s own internal patterns don’t match. Imagination works with those patterns rather than against them, reshaping what is already there into something we can almost see.

This article is republished from The Conversation under a Creative Commons license. Read the original article.

The post How Does Imagination Really Work in the Brain? New Theory Upends What We Knew appeared first on SingularityHub.

Analýza zvláštní skupiny hvězd v galaktické rovině Mléčné dráhy s velmi nízkou metalicitou ukázala, že sdílejí chemické zvláštnosti. Nejspíš jde o fosilii dávné trpasličí galaxie, kterou Mléčná dráha v minulosti pozřela. Galaxie nazvaná Loki měla jen krátký život, ale musel být velmi bouřlivý. Zkoumané hvězdy nesou stopy po supernovách, hypernovách a srážkách neutronových hvězd, které se kdysi odehrály v galaxii Loki.

…aneb Fascinující historie ďábelské jámy v Arizoně

Nová technologie fyziků z McGill University generuje fonony při extrémně nízkých teplotách. Další krokem by mohly být fononové lasery, které budou vytvářet „zvukové paprsky“. Mohly by z toho být nové komunikační systémy, citlivé senzory nebo třeba pokročilé biomedicínské aplikace.

Vice-prezident Nvidie přiznal, že náklady na AI má vyšší než náklady na lidi. Nemá s tím ale problém, protože šéf Nvidie hodnotí inženýry podle toho, jak využívají AI. Čím více AI, tím lepší inženýr…

V závěru roku 2011 představila AMD světu přelomovou grafickou kartu. Radeon HD 7970 je svého druhu legendou a na Linuxu jde o nejstarší model podporovaný ovladačem AMDGPU, tedy včetně API Vulkan. A i v roce 2026 jde kartu, jejíž používání nemá zásadní kompromisy.

Richard Biener oznámil vydání verze 16.1 (16.1.0) kolekce kompilátorů pro různé programovací jazyky GCC (GNU Compiler Collection). Jedná se o první stabilní verzi řady 16. Přehled změn, nových vlastností a oprav a aktualizovaná dokumentace na stránkách projektu. Některé zdrojové kódy, které bylo možné přeložit s předchozími verzemi GCC, bude nutné upravit.

Zulip Server z open source komunikační platformy Zulip (Wikipedie, GitHub) byl vydán ve verzi 12.0. Přehled novinek v příspěvku na blogu.

Give a man a phishing kit and he might get lucky a couple of times; teach an AI to phish and it'll change the landscape, if KnowBe4's latest phishing trends report is accurate. The cybersecurity and phishing awareness outfit released the seventh edition of its Phishing Threat Trends report on Thursday, and it appears that the internet's legions of phishermen are turning to AI in more ways, and more often, than ever thanks to their widespread adoption of AI. Nearly 86 percent of phishing campaigns KnowBe4 threat researchers have picked up on in the past six months have involved some sort of use of AI, according to the report. That's a gradual, steady increase over the past two years, too. 80 percent of phishing campaigns made use of AI in 2024, and 84 percent did so last year, suggesting holdouts are increasingly adopting the tech to broaden their reach.  That number may be troubling enough, but it's how AI is being used that KnowBe4 points out is the biggest problem. Well-written, highly personalized AI-crafted phishing messages are bad enough, but AI is also automating the reconnaissance and info gathering phases of a campaign, speeding up the phishing process and giving attackers more time to shift to multiple attack vectors to better gain their victims' trust.  While the report doesn't compile vectors as a share of total phishing attacks, it does note that there has been a 49 percent increase in phishing attacks that involve calendar invites, and a 41 percent increase in attacks that involve Microsoft Teams messages impersonating coworkers like IT support employees in order to harvest credentials and the like. Savvy multi-vector phishing operations still often start with an email, and that's one of the big areas where AI is broadening phishing horizons, according to the report. Automated reconnaissance enables attackers to comb through masses of information, extract target data, and feed that into AI-generated email lures. Those polymorphic phishing campaigns take a base template, jazz it up and make it unique to each individual, and voilà, a phishing message that's far less likely to be noticed than the typical one that relies on misspellings and bad grammar to weed out those capable of critical thought.  The report's data suggests that emails are only the start of the modern phishing campaign, however, as those increases in calendar invites and malicious Teams messages are often the second stage in an attack.  As IT teams are one of the most common groups impersonated by phishing attacks, one can easily imagine a phishing email followed by a Teams message from someone claiming to be from the help desk and demanding you click on a link to reset your password, or read and sign a new policy via DocuSign, etc. Both methods ultimately deliver credentials or remote access to an attacker, giving them what they were after. According to Microsoft, phishing campaigns involving AI lures are 4.5 times more effective than human-crafted ones. Meanwhile, the FBI says US cybercrime losses hit a record $20.87 billion last year, with phishing the most common complaint and AI-related fraud accounting for about $893 million of that total. ®

KnowBe4 says 86% of phishing it tracked used AI, and inboxes are only the start

Give a man a phishing kit and he might get lucky a couple of times; teach an AI to phish and it'll change the landscape, if KnowBe4's latest phishing trends report is accurate.…

Publicly released exploit code for an effectively unpatched vulnerability that gives root access to virtually all releases of Linux is setting off alarm bells as defenders scramble to ward off severe compromises inside data centers and on personal devices.

The vulnerability and exploit code that exploits it were released Wednesday evening by researchers from security firm Theori, five weeks after privately disclosing it to the Linux kernel security team. The team patched the vulnerability in versions 7.0, 6.19.12, 6.18.12, 6.12.85, 6.6.137, 6.1.170, 5.15.204, and 5.10.254) but few of the Linux distributions had incorporated those fixes at the time the exploit was released.

A single script hacks all distros

The critical flaw, tracked as CVE-2026-31431 and the name CopyFail, is a local privilege escalation, a vulnerability class that allows unprivileged users to elevate themselves to administrators. CopyFail is particularly severe because it can be exploited with a single piece of exploit code—released in Wednesday’s disclosure—that works across all vulnerable distributions with no modification. With that, an attacker can, among other things, hack multi-tenant systems, break out of containers based on Kubernetes or other frameworks, and create malicious pull requests that pipe the exploit code through CI/CD work flows.

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China's "hacker-for-hire ecosystem has gotten out of control," according to Brett Leatherman, assistant director of the FBI's cyber division. This ecosystem includes private technology companies operating at the behest of the PRC's intelligence agencies while allowing Beijing to maintain plausible deniability.  "Motivated by profit, this network of private companies and contractors in China cast a wide net to identify vulnerable computers, exploit those computers, and then identify information that it could sell directly or indirectly to the PRC government," Leatherman told reporters on Thursday. Or, if the Chinese government won't buy it, the hackers-for-hire "turn from cyber mercenaries into cyber dealers," selling access to the compromised systems and stolen data to third parties on the dark web. "This leads to a less secure environment that is ripe for further lawlessness," Leatherman said.  Xu Zewei's extradition and the criminal charges against him, however, should send a message to China's contractor ecosystem, he added: "The protection you assume from operating inside China does not extend the moment you cross a border." Xu, a Chinese national, was extradited from Italy to the United States over the weekend and charged with nine hacking-related crimes. Italian cops arrested Xu last July. According to American prosecutors, China's Ministry of State Security (MSS) and Shanghai State Security Bureau allegedly directed Xu to hack thousands of computers and steal sensitive information in a way that hid the Chinese government's involvement. This happened between February 2020 and June 2021, and some of the digital intrusions were part of the 2021 campaign in which Hafnium (now better known as Silk Typhoon) exploited zero-day bugs in Microsoft Exchange and compromised hundreds of thousands of servers worldwide, including 12,700 organizations in the US alone. Other intrusions targeted American universities and researchers working on COVID-19 vaccines, treatments, and testing during the height of the pandemic, prosecutors allege.  The indictment claims that at the time, Xu worked as a general manager at a company named Shanghai Powerock Network, which the feds previously linked to Hafnium/Silk Typhoon. "Among other things, Xu worked on taskings from the SSSB, supervised hacking activity of other Powerock personnel in support of such taskings, coordinated hacking activities with fellow hacker Zhang Yu, and reported the results of the hacking activities to the SSSB," according to the indictment [PDF]. The indictment also charges Zhang, a director at Shanghai Firetech Information Science and Technology Company who allegedly operated at the direction of the SSSB, along with two unnamed SSSB officers who directed the hacking operations. Court records show Xu is charged with conspiracy to cause damage to and obtain information by unauthorized access to protected computers, to commit wire fraud, and to commit aggravated identity theft, which carries a maximum penalty of five years in prison; conspiracy to commit wire fraud and two counts of wire fraud, each carrying a maximum penalty of 20 years; two counts of obtaining information by unauthorized access to protected computers, each carrying a maximum penalty of five years; two counts of intentional damage to a protected computer, each carrying a maximum penalty of 10 years; and one count of aggravated identity theft, which carries a mandatory consecutive two-year sentence. Zhang remains at large, according to the DoJ. ®

One alleged cyber contractor was extradited to the US over the weekend

China's "hacker-for-hire ecosystem has gotten out of control," according to Brett Leatherman, assistant director of the FBI's cyber division.…