Microsoft Windows 11 24H2 Update Version OS Builds 26200.7627 and 26100.7627

KB5077744 is an out-of-band cumulative update for Windows 11 25H2 and 24H2 (OS Builds 26200.7627 and 26100.7627). It fixes Remote Desktop authentication sign-in failures after KB5074109 and includes prior security and non-security updates. Reference IDs: KB5071142, KB5074105, KB5078127.

• Includes security fixes and improvements from the January 13, 2026 security update KB5074109.
• Addresses authentication-related Remote Desktop sign-in failures after installing KB5074109.

• Fixed Remote Desktop sign-in failures affecting some users after the January 2026 security update.
• Cumulative update includes previous security and non-security fixes.

• Password icon might be missing or invisible in lock screen sign-in options on some systems.
• Apps might become unresponsive when opening or saving files to cloud-based storage such as OneDrive or Dropbox.

• This update is cumulative; devices with earlier updates installed will download only the new content in this package.
• Servicing stack update included: KB5071142 for OS build 26100.7295.
• Known issue workarounds are addressed in KB5074105 and KB5078127.

Product Information

Vendor: Microsoft

Product: Windows 11

Version: OS Builds 26200.7627 and 26100.7627

Release date: Jan 17, 2026