Microsoft has acknowledged a critical memory leak in the March 2024 Windows Server security update, causing widespread crashes among Windows domain controllers. The issue stems from a memory leak within the Local Security Authority Subsystem Service (LSASS) process, affecting Windows Server 2022, Windows Server 2019, Windows Server 2016, and Windows Server 2012 R2. Microsoft has assured users that identifying the root cause has allowed it to make progress in actively developing a fix that will arrive in the coming days. In the meantime, there is no workaround for the issue, and uninstalling the problematic update from affected domain controllers seems to be the only temporary fix. This isn't the first time Microsoft has encountered LSASS-related issues, as similar instances occurred in December 2022 and earlier in March 2022.