Windows Server DC boot loop: Microsoft adds status information (Feb. 2022)

Windows[German]With the January 11, 2022 security updates, an issue occurred that caused Windows Server Domain Controllers to enter a cyclic restart loop. I had reported in the blog and Microsoft had already provided special updates in January to fix the problems. Now it seems Microsoft has also posted a corresponding entry on its status page for Windows Server 2022.


Review: Windows Server DC boot loop

I had mentioned it in the blog post Windows Server: January 2022 security updates are causing DC boot loop. Administrators of Windows Domain Controllers faced the problem of machines rebooting cyclically (15 minutes apart) after installing the January 2022 security updates. Lsass.exe (or wininit.exe) triggered a blue screen with the stop error 0xc0000005. Microsoft then released out-of-band updates on 1/17 and 1/18/2022 to fix this problem (see also the links at the end of the article). As of Jan. 18, 2022, these issues should be resolved (see also Status of January 2022 security updates from Microsoft (2022/01/25)) – when I also point out a possible conflict in the blog post Windows Server 2019: Is Update KB5010791 causing a Boot Loop?

Lsass boot loop added to status entry

The colleagues at Bleeping Computer have noticed that Microsoft has now created an addendum in the Windows Server 2022 status area that addresses this DC boot loop (although the fixes date back to January 17, 2022). 

Windows Server 2022 Know issues

There it is confirmed that update KB5009555 can restart unexpectedly on domain controllers (DCs) with affected versions of Windows Server. In this case, you will see an error dialog for Lsass.exe that says: "Your PC will restart automatically in one minute" or "The system will shut down and restart now". On Windows Server 2016 and later, you are more likely to be affected if DCs use Shadow Principals in Enhanced Security Admin Environment (ESAE) or Privileged Identity Management (PIM) environments.

The issue affected the following Windows Server versions and was fixed with the out-of-band updates (e.g., KB5010796)  dated 1/17/18/2022. 


  • Windows Server 2022
  • Windows Server Version 20H2
  • Windows Server 2019
  • Windows Server 2016
  • Windows Server 2012 R2
  • Windows Server 2012

Windows Server 2008 R2 is no longer listed by Microsoft, even though it is still provided with security updates in the ESU program and also received out-of-band update on January 17, 2022.

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