Microsoft has released Windows 11 KB5072033 and KB5071417 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 December 2025 Patch Tuesday security patches for vulnerabilities discovered in previous months.
You can install today's update by going to Start > Settings > Windows Update and clicking on 'Check for Updates.'
December 2025 Update
You can also manually download and install the update from the Microsoft Update Catalog.
This is the third 'Patch Tuesday' release for version 25H2, but as it's based on version 24H2, 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 December 2025 Patch Tuesday update
After installing today's security updates, Windows 11 25H2 (KB5072033) will have its build number changed to Build 26200.7462 (or 26100.7462 in case of 24H2), and 23H2 (KB5068865) will be changed to 226x1.6050.
The biggest highlight of the update is the dark mode support for dialogs in File Explorer and new Virtual Workspaces settings for managing features like Sandbox:
[Advanced Settings] New! You can now turn on Virtual Workspaces in Advanced Settings . Virtual Workspaces allow you to enable or disable virtual environments such as Hyper-V and Windows Sandbox. To access Virtual Workspaces, go to Settings > Systems > Advanced .
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