Domain Controller
The latest Domain Controller coverage — news, analysis, and updates from the WindowsNews.AI desk.
Microsoft releases emergency fix for Windows Server DC restart loops caused by LSASS-PAM crash
Microsoft has released an emergency out-of-band (OOB) update for Windows Server in April 2026 to address a critical issue causing domain controllers to enter restart loops. The problem stems from...
Microsoft Releases KB5091157 Out-of-Band Fix for Windows Server 2025 Reboot Loops
Microsoft has issued emergency out-of-band update KB5091157 to address critical reboot loop issues affecting Windows Server 2025 installations. The patch, released outside the normal Patch Tuesday...
April 2026 Windows Security Updates Trigger Kerberos Hardening, LSASS Crashes, and Domain Controller Outages
Microsoft's April 2026 security updates have unleashed a cascade of authentication failures across enterprise environments, with domain controllers experiencing LSASS crashes and Kerberos hardening...
KB5082063 Forces Domain Controller Reboot Loops After LSASS Crashes on Windows Server 2022, 2019, 2016
Microsoft's April 2026 Patch Tuesday update KB5082063 is causing critical LSASS crashes that force domain controllers into reboot loops, creating widespread Active Directory authentication failures...
Windows Server 2025 Update Confusion Officially Resolved, But KB5082063 Introduces LSASS Memory Leak Risk
Microsoft has officially marked the Windows Server 2025 update confusion as resolved in its Release Health dashboard, closing a chapter on one of the most disruptive Windows Server incidents in...
April 2026 Patch Tuesday Causes Critical Windows Sign-In Failures and Domain Controller Reboot Loops
Microsoft's April 2026 Patch Tuesday has triggered widespread authentication failures and domain controller instability, creating what administrators describe as the worst update-related crisis in...
Urgent Windows LDAP Vulnerability Threatens Domain Controllers: What to Do Now
Microsoft has disclosed a new vulnerability in the Windows Lightweight Directory Access Protocol (LDAP) that can be used to launch denial-of-service attacks against domain controllers and other...
Microsoft's Kerberos OOB Updates: Fixing Domain Controller Sign-in Failures
In November 2022, Microsoft released a series of emergency, out-of-band (OOB) updates to address a critical Kerberos authentication regression that was causing sign-in failures and remote access...
May 2022 OOB Patches: How Microsoft Fixed Critical Certificate Authentication Break on Domain Controllers
In May 2022, Microsoft released emergency out-of-band (OOB) updates to address a critical authentication failure affecting Windows domain controllers that had installed the May 10, 2022, cumulative...
KB5013943 Certificate Mapping Bug: How Microsoft's May 2022 Update Broke NPS & RADIUS Authentication
Microsoft's May 2022 cumulative update KB5013943 for Windows Server 2016, 2019, and 2022 domain controllers introduced a critical security change that inadvertently broke certificate-based...
Microsoft’s September Patches Put a Target on SMB and HPC—81 CVEs, One Public Disclosure
Microsoft’s September 2025 security update lands with 81 freshly patched vulnerabilities, and the mix is anything but quiet: a publicly disclosed Server Message Block (SMB) elevation-of-privilege...
Microsoft KB5065426 Patch Stops NDI/OBS Stutter and MSI Missteps for Windows 11 24H2
Microsoft has fixed the aggravating NDI and OBS streaming stutter that plagued content creators for weeks, rolling the remedy into its September 9 cumulative update for Windows 11, version 24H2....