Microsoft Windows Server 2022 Update Version OS Build 20348.4650
Your rating
Rate update installation process
Risk factor
A total of 2 users have rated this update.
AI enhanced content
Update Summary
KB5077800 for Windows Server 2022 (OS Build 20348.4650) is an out-of-band cumulative update. It includes January 13, 2026 security fixes (KB5073457) plus a Remote Desktop sign-in fix and servicing stack update KB5074428.
Update Details
Security
- Includes security fixes from the January 13, 2026 security update (KB5073457).
- WSUS error details are temporarily removed to address the Remote Code Execution vulnerability CVE-2025-59287.
Bug Fixes
- Fixed Remote Desktop sign-in failures that occurred after installing the January 2026 Windows security update (KB5073457).
Known Issues
- WSUS does not display synchronization error details after installing KB5070884 or later updates.
- Some applications may become unresponsive or show errors 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-download.
- Some Secure Launch-capable PCs with Virtual Secure Mode enabled may restart instead of shutting down or hibernating.
Hints
- This update is cumulative; devices with earlier updates installed will download only the new content in this package.
- The cloud-storage issue is addressed in KB5078136.
- The VSM shutdown/hibernate issue is addressed in KB5075906.
- Includes servicing stack update KB5074428 (OS Build 20348.4640).
Product Information
Vendor: Microsoft
Product: Windows Server 2022
Product type: Software
Application category: Utilities
Platform: Windows
Version: OS Build 20348.4650
Vendor information published: Jan 17, 2026
Original release notes: View on vendor site
Published on updatealert.io: Jun 3, 2026
Description: Server operating system for on-premises and hybrid workloads.