Hello, I am currently using Guacamole 1.4.0 and have set up a separate instance of Guacamole 1.5.5 for migration. However, I am experiencing issues with RDP connections. The screen remains stuck on "Waiting for response," and there are no clear errors in the logs. I have captured TCPDUMP data, but it shows no communication activity. I have confirmed that RDP is enabled when building the Guacamole Server. Additionally, I verified that TCP connections from the Guacamole Server to the Windows Server are successful using the Telnet command, so I do not believe this is a network issue. Could you please assist me in resolving this issue? Thank you for your support. Best regards, Yamashita
