Windows 11 update blackout traced to January preview, rollback advised
A Windows 11 bug from the January Preview Update has blocked all updates since February for some devices, preventing monthly security patches and Secure Boot certificate updates. Affected systems show update attempts failing with error 0x80010002 due to download timeouts and firewall rules. Microsoft recommends a Known-Issue Rollback (KB5083806 for 26H1 and KB5083631 for 24H2/25H2/Server 2025) to revert the faulty update; IT admins can apply KIR, and home users can try removing the January preview update. With Secure Boot certificates expiring in June, the rollback should be applied promptly to restore updates and security fixes.





