Category: Windows 11

Microsoft investigates Windows 11 boot failure following January cumulative update. There reports that the January 2026 security update, released on January 13, has left certain Windows 11 devices unable to boot. Affected systems display a black screen with the message, "Your device ran into a problem and needs a restart. You can restart," accompanied by the stop code "UNMOUNTABLE_BOOT_VOLUME." At this stage, the device cannot complete startup and requires manual boot recovery.

It seems the January cumulative updates for Windows 11 come with a lot of issues. To fix the bugs, Microsoft earlier released a set of new patches, and now we have the second unscheduled update set in the last two weeks. While the first set addressed issues with Remote Desktop and hibernation, the new update aims to fix Outlook and cloud storage.

Several days later, Microsoft finally made Windows 11 build 26220.7653 available to Insiders in the Dev channel. It is the same build as the one in the Beta channel released earlier.

Multiple Windows 11 users report an inability to launch familiar applications. The issue affects both built-in Microsoft utilities, such as Notepad and Snipping Tool, and third-party programs including Armory Crate, Alienware Command Center, and NitroSense. Attempts to open some applications trigger error messages, primarily displaying code 0x803f8001. In some instances, users also encounter a file system error with code -2143322111.

Earlier this week, Microsoft released cumulative updates for supported versions of Windows, which has once again caused problems for users. The patch update KB5073455, released on January 13, 2026, for Windows 11 version 23H2, causes devices with System Guard Secure Launch enabled to restart instead of shutting down or hibernating. Windows 11, Windows 10, and Windows Server have also experienced connection and authentication issues with remote access applications such as Windows Apps, Azure Virtual Desktop, and Windows 365. To resolve these, Microsoft today released unscheduled updates KB5077744 and KB5077797.

Microsoft has released Windows 11 build 26220.7653 (KB5074157), to Insiders in the Beta channel. Microsoft has updated the dialog boxes in Settings under Accounts > Other users, adopting the modern WinUI framework and adding dark theme support. Users can now set .webp images as desktop backgrounds through Personalization settings. Copilot suggestions in Click to Do now load instantly, though this update excludes Windows Insiders in the European Economic Area and China. And more.

Microsoft has released Windows 11 Build 28020.1371 (version 26H1) via KB5073097 to Insiders in the Canary channel. The changelog doesn't highlight any new feature. Instead, the release comes with several bugfixes and improvements.

Microsoft has released monthly cumulative updates for all supported Windows systems. These updates primarily address known bugs and vulnerabilities, but may also include new features. The updates are now available through Windows Update. Here are some details.

A new hidden Copilot button have been found in the File Explorer application on recent Windows 11 preview builds. The button remains invisible during normal use and only appears when users hover over a specific blank area in the navigation bar. The discovery, initially reported by user @phantomofearth, points to a direct integration with Microsoft Copilot. Internal strings within the preview build reference a feature titled "Chat with Copilot".

Microsoft has released Windows 11 Build 26220.7535 (KB5072046), to Insiders in the Dev and Beta channels. It introduces Copilot-powered image descriptions in Narrator. Also, administrators can now uninstall Microsoft Copilot for specific users via a new Group Policy named RemoveMicrosoftCopilotApp in Enterprise, Pro, and Education editions. And more.