Hello,
When attempting to connect to a Windows 11 (24H2) machine via Devolutions gateway (2025.1.4) installed on Windows server 2022, the connection fails. The gateway log file reports "An existing connection was forcibly closed by the remote host. (os error 10054)", and the event log on the Win11 computer reports "An TLS 1.3 connection request was received from a remote client application, but none of the cipher suites supported by the client application are supported by the server. The TLS connection request has failed. The SSPI client process is svchost[TermService] (PID: 1400)."
Opening an RDP connection on the Gateway server and connecting to the same Win11 machine works fine.
Wondering if there is a TLS 1.3 cipher suite required by Win11 RDP that is currently unsupported by the Gateway software?
TLS Cipher Suites in Windows 11 v22H2 and later. - Win32 apps | Microsoft Learn
System requirements for Devolutions Server - Devolutions Documentation
Also noticed that there is a 'maximum TLS version' property on the RDP entry in RDM, but it is greyed out unless the FreeRDP protocol is selected. However when I tried changing to FreeRDP and setting max TLS version to 1.2, when launching the connection it says unable to connect to the gateway so not sure if FreeRDP is compatible with gateway connections.
Please let me know if you would like any additional info.
Thanks
Joe