Microsoft Windows Server 2022 Update Version OS Build 20348.4651

KB5078136 for Windows Server 2022 (OS Build 20348.4651) is an out-of-band cumulative update that includes prior security fixes plus a file system fix for cloud-based storage issues. It also includes servicing stack update KB5074428 and notes known issues affecting WSUS error details and VSM shutdown or hibernation.

• Includes security fixes and improvements from the January 13, 2026 security update (KB5073457) and the January 17, 2026 out-of-band update (KB5077800).
• WSUS synchronization error details are temporarily removed to address CVE-2025-59287.

• Fixed an issue where some applications became unresponsive or errored when opening or saving files to cloud-based storage such as OneDrive or Dropbox.
• Fixed an Outlook issue where PST files stored on OneDrive could cause Outlook to hang, fail to reopen, or show missing sent items and re-downloaded emails.

• WSUS does not display synchronization error details in error reporting after installing KB5070884 or later updates.
• Some Secure Launch-capable PCs with Virtual Secure Mode enabled may fail to shut down or hibernate and instead restart.

• This update is cumulative; devices with earlier updates installed will download and install only the new content in this package.
• Includes servicing stack update KB5074428 (OS Build 20348.4640).
• The VSM shutdown/hibernate issue is addressed in KB5075906.

Product Information

Vendor: Microsoft

Product: Windows Server 2022

Version: OS Build 20348.4651

Release date: Jan 24, 2026