Microsoft has launched emergency out-of-band (OOB) updates to repair a recognized problem inflicting Home windows area controllers to crash after putting in the March 2024 Home windows Server safety updates.
As reported by BleepingComputer on Wednesday, many system directors have warned since this month’s Patch Tuesday that servers are unexpectedly freezing and restarting resulting from a reminiscence leak within the Native Safety Authority Subsystem Service (LSASS) course of.
“Our signs have been ballooning reminiscence utilization on the lsass.exe course of after putting in KB5035855 (Server 2016) and KB5035857 (Server 2022) to the purpose that every one bodily and digital reminiscence was consumed and the machine hung,” a Home windows admin advised BleepingComputer.
“Since set up of the march updates (Change in addition to common Home windows Server updates) most of our DCs present consistently rising lsass reminiscence utilization (till they die),” one other admin stated.
Redmond publicly acknowledged this problem after BleepingComputer reached out for extra particulars, saying it impacts all area controller servers with the most recent Home windows Server 2012 R2, 2016, 2019, and 2022 updates.
At this time, Microsoft launched the next emergency Home windows Server cumulative updates that ought to repair the LSASS reminiscence leak and stop impacted servers from crashing and restarting:
“This replace addresses a recognized problem that impacts the Native Safety Authority Subsystem Service (LSASS). It would leak reminiscence on area controllers (DCs),” the corporate explains.
“The leak happens when on-premises and cloud-based Energetic Listing DCs course of Kerberos authentication requests. This substantial leak may trigger extreme reminiscence utilization. Due to this, LSASS may cease responding, and the DCs will restart when you don’t count on it.”
To repair this recognized problem, admins should obtain the OOB updates from the Microsoft Replace Catalog and set up them on affected area controllers.
For those who put in earlier Home windows Server updates, solely the brand new updates in these packages shall be downloaded and put in. Microsoft has not reported any recognized points with these emergency updates.
Microsoft resolved different Home windows Server crash points in December 2022 after the November 2022 updates launched one other leak and in March 2022 when admins once more reported widespread area controller reboots.