Emergency patch lands after Windows 11 23H2 shutdown bug hits Enterprise/IoT editions
Microsoft released the January 2026 Windows security update, but four days later issued an emergency out-of-band fix after reports that the update could prevent some systems from shutting down or hibernating and could block remote desktop logins. The shutdown issue affected only Windows 11 version 23H2 on Enterprise and IoT editions, and Microsoft later clarified the scope and released the fix (with an update on Jan 18 stating 23H2 was the affected variant).