Windows 11 October 2025 Patch Tuesday Updates: KB5066835 and KB5066793 Security Fixes and Improvements
Microsoft has deployed its October 2025 Patch Tuesday updates for Windows 11 versions 25H2, 24H2, 23H2, and 22H2. These critical updates address security vulnerabilities, fix browser printing issues, resolve gaming input problems, and introduce compatibility changes including driver removals. Users should install these updates promptly to maintain system security and stability.
Microsoft has officially released its October 2025 Patch Tuesday updates for all supported versions of Windows 11, marking another crucial monthly security deployment. The updates, identified as KB5066835 for Windows 11 25H2 and 24H2, and KB5066793 for versions 23H2 and 22H2, deliver essential security patches alongside numerous functional improvements and bug fixes. These updates continue Microsoft’s commitment to maintaining the security and reliability of its flagship operating system across all supported builds.