Microsoft has released an emergency fix to address critical bugs from the January 2026 Windows security update, which affected shutdown and hibernation functions on some Windows 11 devices, causing unexpected restarts. The update also restores remote login functionality for Windows 10 and 11 users, with issues related to credential prompts identified as the cause of previous login difficulties. Some users still report issues such as blank screens and crashes in Outlook Classic. Microsoft previously issued an emergency fix in October for complications related to the Windows Recovery Environment. Additionally, the Extended Security Updates program is available for users who want to continue using Windows 10 with security support.