Microsoft has rolled out a mandatory cumulative update (KB5051974) for Windows 10 versions 22H2 and 21H2, bringing significant changes and security improvements. This January 2025 Patch Tuesday update introduces several notable features and fixes.

Key Updates:
– Automatic installation of the new Outlook for Windows app
– Build numbers updated to 19045.5487 (22H2) and 19044.5487 (21H2)
– Resolution of critical memory leak issues

Major Fixes:
1. Screen Capture: Resolved responsiveness issues with Capture Service and Snipping Tool
2. USB Audio: Fixed problems with DAC drivers and external audio devices
3. Camera Recognition: Addressed USB camera detection issues
4. Virtual Memory: Corrected depletion problems affecting app performance

Known Issues:
1. OpenSSH connectivity problems (requires manual SSHD service start)
2. Installation failures with Citrix Session Recording Agent 2411
3. EventViewer displaying incorrect SgrmBroker.exe errors

Users can install the update through Windows Settings > Windows Update or manually download it from the Microsoft Update Catalog. The update is mandatory and will automatically install once users check for updates, though installation timing can be scheduled for convenience.

For IT administrators, specific guidance is available regarding the new Outlook app deployment and management through official Microsoft documentation.