Microsoft shared a temporary fix on Wednesday for a known issue that prevents Windows 11 users from logging in with valid domain credentials after installing the September 2026 security updates.
Update 9/18/26: Microsoft acknowledged the issue and shared mitigation advice. More information can be found in this article. Microsoft is investigating reports that the Windows 11 KB5124008 security ...
Microsoft has shared a temporary workaround for a Windows 11 KB5124008 issue that can cause domain-joined devices to lose their secure trust relationship with an on-premises Active Directory domain.