Microsoft released an optional preview cumulative update, KB5074105, for Windows 11 that delivers 32 fixes addressing sign-in, boot, activation, and other quality issues. The non-security January preview lets admins test fixes and features—such as Cross‑Device Resume and expanded Windows Hello ESS support—before they arrive in next month’s Patch Tuesday. #KB5074105 #Windows11
Keypoints
- KB5074105 is an optional, non-security preview update for Windows 11 delivering 32 quality fixes and improvements.
- The update fixes Explorer.exe hanging during the first login when certain apps are configured as startup apps.
- It resolves startup hangs related to Windows Boot Manager debugging and iSCSI boot failures that caused Inaccessible Boot Device errors.
- The preview addresses Windows license migration failures caused by inability to register the PC’s digital license with the Windows Activation server.
- Admins can install via Settings > Windows Update or manually from the Microsoft Update Catalog; the update moves 25H2 and 24H2 devices to builds 26200.7705 and 26100.7705 respectively.