A known issue that affects the Local Security Authority Subsystem Service (LSASS) has been addressed by Microsoft's release of KB5037425 (OS Build 17763.5579), an out-of-band update. This update is available for Windows 10 Enterprise LTSC 2019, Windows 10 IoT Enterprise LTSC 2019, Windows 10 IoT Core 2019 LTSC, and Windows Server 2019.

March 25, 2024—KB5037425 (OS Build 17763.5579) Out-of-band - Microsoft Support

Highlights 

• This update addresses a known issue that affects the Local Security Authority Subsystem Service (LSASS).

Improvements

This non-security update includes improvements. When you install this KB: 

• This update addresses a known issue that affects the Local Security Authority Subsystem Service (LSASS). It might leak memory on domain controllers (DCs). This issue occurs after you install  KB5035849 (March 12, 2024). 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. 

If you installed earlier updates, only the new updates contained in this package will be downloaded and installed on your device.

Windows 10 servicing stack update - 17763.5568

This update makes quality improvements to the servicing stack, which is the component that installs Windows updates. Servicing stack updates (SSU) ensure that you have a robust and reliable servicing stack so that your devices can receive and install Microsoft updates. 

March 25, 2024—KB5037425 (OS Build 17763.5579) Out-of-band - Microsoft Support