Microsoft's cumulative updates for October address a significant issue with Remote Desktop connections on Windows servers, specifically related to the RD Gateway service, which began crashing every 30 minutes after the July security updates. This issue, confirmed by Microsoft, is linked to a TSGateway service termination problem that triggers an 0xc0000005 exception code, logged as Event 1000. The affected Windows Server releases include:
- Windows Server 2022 (KB5040437)
- Windows Server 2019 (KB5040430)
- Windows Server 2016 (KB5040434)
- Windows Server 2012 R2 (KB5040456)
- Windows Server 2012 (KB5040485)
Temporary workarounds include blocking connections over the pipeRpcProxy3388 and modifying the RDGClientTransport registry key. Administrators are advised to back up the registry before making changes. Microsoft has previously addressed similar connectivity issues and has also released security updates for October 2024 that fix 118 vulnerabilities, including five zero-days.