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Microsoft released urgent updates to fix a problem causing Windows domain controllers to crash after installing the March 2024 Windows Server security updates.
Microsoft released the following emergency Windows Server cumulative updates that should fix the LSASS memory leak and prevent impacted servers from crashing and restarting:
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KB5037422 (Windows Server 2022)
KB5037423 (Windows Server 2016)
“This update resolves a problem with the Local Security Authority Subsystem Service (LSASS) that may cause memory leaks on domain controllers (DCs),”
“The leak occurs when on-premises and cloud-based Active Directory DCs process Kerberos authentication requests. This substantial leak might cause excessive memory usage. Because of this, LSASS might stop responding, and the DCs will restart when you do not expect it.”
To resolve this issue, administrators should download and install the OOB updates from the Microsoft Update Catalog onto affected domain controllers.
If you already installed previous updates for Windows Server, only the new updates included in these packages will be downloaded and installed. Microsoft has not reported any known issues with these emergency updates.
In December 2022, Microsoft fixed additional crashes in Windows Server that were caused by the updates released in November 2022. They also addressed the problem of domain controller reboots that admins had reported in March 2022.
