GoKawiilMicrosoft has released Windows 11 KB5089549 and KB5087420 cumulative updates for versions 25H2/24H2 and 23H2 to fix security vulnerabilities, bugs, and add new features.
Today's updates are mandatory as they contain the May 2026 Patch Tuesday security patches for 120 vulnerabilities discovered in previous months.
You can install today's update by going to Start > Settings > Windows Update and clicking on 'Check for Updates.'
You can also manually download and install the update from the Microsoft Update Catalog.
This is the fifth 'Patch Tuesday' release in 2026, and it's based on 24H2, which means 25H2 gets the same update. There are no exclusive or special changes. You'll get the same fixes across the two versions of Windows 11.
What's new in the May 2026 Patch Tuesday update
After installing today's security updates, Windows 11 25H2 (KB5089549) will have its build number changed to 26200.8457 25H2 and 26100.8457 (24H2), and 23H2 (KB5087420) will be changed to 22631.7079.
After the update, Xbox mode is added to the desktop, and it allows you to experience an Xbox console-like experience on your PC. In addition, Microsoft has patched issues with the taskbar and improved the reliability of Windows Hello.
Here's the full list of improvements and fixes:
[File Explorer] New! This update expands the list of archive formats that can be used in File Explorer to include uu, cpio, xar, and NuGet Packages (nupkg). With this update, View and Sort preferences are preserved in folders such as Downloads and Documents when apps launch File Explorer directly to those locations. This update removes a white flash that could appear when opening This PC or while resizing the Details pane in dark mode. This update improves the reliability of relevant explorer.exe processes so they stop after closing File Explorer windows.
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