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Windows Server 2022 KB5101646
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KB5101646SecurityBug fixPerformance
β¦ Editor's summary
Windows Server 2022 KB5101646 is the July 2026 cumulative security update. It delivers Microsoft's latest security fixes, expands Secure Boot certificate deployment, enhances Remote Desktop certificate validation, and includes cumulative quality, reliability, and servicing improvements for supported Windows Server 2022 systems.
β Security impact
- Includes Microsoft's July 2026 cumulative security updates.
- Expands deployment of Microsoft Secure Boot certificates for supported systems.
- Adds SHA-2 certificate thumbprint support for trusted Remote Desktop publishers.
- Includes additional security hardening for networking and core operating system components.
What's new
- Updated Windows Server 2022 to OS Build 20348.5386.
- Installed the July 2026 cumulative update (KB5101646).
- Included Microsoft's latest cumulative security fixes.
- Expanded Secure Boot certificate deployment for supported devices.
- Added SHA-2 certificate thumbprint support for trusted Remote Desktop publishers.
- Improved Windows Update servicing reliability.
- Included cumulative quality, performance, and stability improvements.
More from Windows Server 2022
Windows Server 2022 20348.5622Sep 9, 2026
Latest in Operating Systems
Windows 11: Windows 11 26300.9550Sep 30, 2026
iOS: iOS 27.0.1Sep 29, 2026
macOS: macOS 27.0.1Sep 29, 2026
iPadOS: iPadOS 27.0.1Sep 29, 2026
watchOS: watchOS 27.0.1Sep 24, 2026
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