January 9, 2024—KB5034123 (OS Builds 22621.3007 and 22631.3007) - Microsoft Support

The January 2024 security update is now available for Windows 11.

Windows 11 release notes:

• Version 22H2 & 23H2 (KB5034123): support.microsoft.com/help/5034123
• Version 21H2 (KB5034121): support.microsoft.com/help/5034121

Highlights for Windows 11, versions 22H2 & 23H2:

• This update addresses security issues for your Windows operating system.

Reminders:

• After February 2024, there are no more optional, non-security preview releases for Windows 11, version 22H2