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Several server administrators have reported serious issues with Remote Desktop (RDP) after installing the latest security updates from ecosystemThe issues affect multiple versions of Windows Server, causing the RDP service to crash and prevent new connections from being established.
Problem details
According to reports published by BleepingComputer, Windows Server users who installed the September cumulative updates have encountered unpredictable behavior of the Remote Desktop service. Initially, the service might work properly for a few hours, but then it started refusing connections.
The issue manifests itself in various forms. Some users report that existing RDP sessions cannot be properly terminated or logged out. New connection attempts may get stuck in the connection establishment phase and then fail. The most critical situation is when, after installing the update, the RDP service works fine until the first user logs out. After that, the service crashes and subsequent users cannot log in.
Affected versions and updates
According to the community, the issues affected the following versions of Windows Server after installing the relevant updates:
- Windows Server 2019: Problems occurred after installing an update KB5122876.
- Windows Server 2022: Affected version after installing update KB5122882.
- Windows Server 2025: Update KB5122871 caused failures.
These updates were released by Microsoft in September as part of its monthly security patch cycle. While they are intended to protect systems from known vulnerabilities, in this case they appear to have had unexpected consequences.
Community reaction and possible solutions
The situation has raised concerns among IT administrators who rely on the stability of RDP to manage servers, especially remotely. Losing access to critical systems could lead to significant business disruption.
Microsoft has not officially commented on the issue yet, but the user community is actively discussing possible workarounds. One of them is rolling back updates to the previous version, although this may reduce the level of security of the system. Another option may be to temporarily disable the RDP service or use alternative solutions for remote access, if possible.
IT professionals who encounter similar issues are advised to closely monitor official Microsoft announcements and community reports. If necessary, they should consider rolling back the latest updates, carefully weighing the risks and benefits.
The issue highlights the importance of testing updates in a controlled environment before deploying them to all production servers. Even seemingly minor updates can have unintended consequences for system functionality.
"We observed that after installing the September patch, remote desktop started to work unstable. At first everything was fine, but after a few hours, connection problems started. This created serious difficulties for our administrators," one of the administrators shared his experience on the forum.
Microsoft is expected to release a fix for this issue in the near future to restore normal Remote Desktop service operation for all Windows Server users.
