kb5010196

KB5010196 is an emergency out-of-band update released by Microsoft on January 4, 2022, for Windows Server 2019 and related 2019 LTSC builds. It addresses a Remote Desktop and interactive logon regression that could cause servers to become unresponsive, display a black screen to RDP users, and result in slow sign-in and performance degradation. This update is available through the Microsoft Update Catalog and must be installed manually, as it is not offered automatically via Windows Update. Discussions on WindowsForum.com cover installation steps and troubleshooting for this critical fix.