July 26, 2024 at 01:24PM
July’s security updates for Windows servers have caused disruptions in remote desktop connections using the legacy RPC over HTTP protocol in the Remote Desktop Gateway. When the legacy protocol is used, logon sessions are lost every 30 minutes, impacting users’ connectivity. Microsoft is working on a fix and has provided temporary workarounds. Impacted Windows Server releases and security updates are listed.
Based on the meeting notes, here are the key takeaways:
– July’s security updates from Microsoft have been confirmed to break remote desktop connections on Windows servers using the legacy RPC over HTTP protocol in the Remote Desktop Gateway. This has resulted in remote desktop connections being interrupted and logon sessions being lost, requiring users to reconnect to the server.
– Reports from Windows admins have indicated that the RD Gateway service kept crashing every 30 minutes after installing the updates, causing disruptions in serving applications to users.
– Windows Server releases affected by this issue and the corresponding security updates include: Windows Server 2022 (KB5040437), Windows Server 2019 (KB5040430), Windows Server 2016 (KB5040434), Windows Server 2012 R2 (KB5040456), and Windows Server 2012 (KB5040485).
– Microsoft is working on a fix for the Remote Desktop connection failures and has provided two temporary workarounds for affected organizations. The first workaround involves disallowing connections over pipe and port \pipe\RpcProxy\3388 through the RD Gateway using firewall software. The second workaround involves editing the RDGClientTransport registry key under Terminal Server Client.
– Two years ago, Microsoft had to address a known issue causing RDP and VPN connectivity problems on Windows Servers, and in January 2022, an emergency out-of-band update was issued to fix a bug causing Remote Desktop connection and performance issues on Windows Server.
Please let me know if you need any further information or if there are specific action items to be tracked related to this issue.