Microsoft Windows 11 23H2 Update Version OS Build 22631.6494

KB5077797 is an out-of-band cumulative update for Windows 11 version 23H2 (OS Build 22631.6494). It includes January 13, 2026 security updates plus fixes for Remote Desktop sign-in failures and Secure Launch devices restarting instead of shutting down or hibernating. Reference IDs: KB5073455, KB5071963, KB5078132, KB5075941.

• Includes security fixes and improvements from the January 13, 2026 security update (KB5073455).
• Addresses authentication failures during Remote Desktop connections, including sign-in issues in Windows App and similar clients.

• Fixed Remote Desktop sign-in failures affecting some users during connection authentication.
• Fixed some devices with Secure Launch enabled that restarted instead of shutting down or entering hibernation.

• Some apps may become unresponsive or error when opening or saving files to cloud-based storage such as OneDrive or Dropbox.
• Outlook may hang when PST files are stored on OneDrive, and sent items or downloaded emails may appear missing or re-downloaded.
• Some Secure Launch-capable PCs with Virtual Secure Mode enabled may restart instead of shutting down or hibernating.

• This update is cumulative; devices with earlier updates installed will download only the new changes in this package.
• The servicing stack update KB5071963 (22621.6265) is included to improve Windows update installation reliability.
• The cloud-storage app issue is addressed in KB5078132.
• The VSM shutdown/hibernate issue is fully resolved in Windows updates released on 2026-02-10 (KB5075941) and later.

Product Information

Vendor: Microsoft

Product: Windows 11

Version: OS Build 22631.6494

Release date: Jan 17, 2026