Microsoft has released the Windows 10 KB5120249 ESU for versions 22H2 and 21H2 to address security vulnerabilities, fix bugs, and deliver the August 2026 Patch Tuesday updates. The update resolves a File History backup issue over SMB and expands the rollout of new Secure Boot certificates. #Microsoft #Windows10 #KB5120249 #SecureBoot
Keypoints
- Microsoft released Windows 10 KB5120249 as a mandatory ESU update.
- The update includes the August 2026 Patch Tuesday security fixes.
- It resolves a File History backup failure affecting SMB network shares.
- It expands deployment of new Secure Boot certificates to more devices.
- After installation, Windows 10 builds update to 19045.7663 and 19044.7663.