Some Domain Controllers may restart unexpectedly after applying the March 12, 2024 Updates

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When installing updates, there is always the risk of rogue updates; updates that break functionality, unannounced, unexpected and unsettling. Microsoft is currently researching such a possible side-effect with the March 12, 2024 updates on Active Directory Domain Controllers.


About the issue

Domain Controllers may reboot unexpectedly and keep rebooting. Admins are reporting ballooning memory usage on the lsass.exe process.

The Local Security Authority Subsystem Service (LSASS) is responsible for enforcing the security policy on the system. It verifies users signing in to a Windows or Windows Server, handles password changes, and creates access tokens. It also writes to the Windows Security Log. Forcible termination of lsass.exe will result in a restart of the Domain Controller. The restarts are the actual recovery process, not the problem.

Affected platforms

The following currently supported Windows Server versions are affected:

  • Windows Server 2016 build 14393.6796 (after applying KB5035855)
  • Windows Server 2019 build 17763.5576 (after applying KB5035849)
  • Windows Server 2022 build 20348.2340 (after applying KB5035857)

Unconfirmed details and symptoms

Some admins report the following details and symptoms:

  • The symptoms are not merely observed on Active Directory Domain Controllers, but also on Microsoft Exchange Server installations
  • The symptoms are observed when on-premises and cloud-based Active Directory Domain Controllers service Kerberos authentication requests



Active Directory admins experiencing continually rebooting Domain Controllers share that they have stopped the reboots by disconnecting the network connection and uninstalling the March 12th, 2024 update from these systems. They rebooted the systems and after this reconnected the network connection.

To uninstall these updates, run the following command line:

Windows Server 2016: wusa.exe /uninstall /kb:5035855

Windows Server 2019: wusa.exe /uninstall /kb:5035849

Windows Server 2022: wusa.exe /uninstall /kb:5035857



I’m not a fan of not having critical updates installed, but in this case I feel it may be wise to wait 14 days before installing the March 12th, 2024 updates on Domain Controllers. My experience is that serious problems like the above problem are addressed within that timeframe.



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