Keypoints
- The January 2026 updates for Windows 11 fix security vulnerabilities, bugs, and introduce new features.
- The updates are mandatory and include security patches from previous months’ vulnerabilities.
- These updates will change the build numbers of affected Windows 11 versions to reflect the installation.
- Security improvements include updates to WinSqlite3.dll and changes to Secure Boot device targeting data.
- The updates address networking issues related to Windows Subsystem for Linux and Azure Virtual Desktop.