I am getting the same error message occasionally with a RDP connection using mstsc.exe or vmconnect.exe instead of Guacamole, also targeting a Windows 10 (virtual) system. Usually I restart the target system and after restart the connection is working fine again. Therefore it may be a bug in Windows and not Guacamole. Did you try to restart the target system already?
Regards, Joachim Von: Joe Gullo <surfroc...@surfrock66.com> Gesendet: Tuesday, 29 December 2020 17:26 An: user@guacamole.apache.org Betreff: User session locked in use and cannot reset? Per the recommendation on the Jira tracker, I'm posting this issue to the mailing list. I don't think this is a bug per se, but I can't figure out how to unlock this session. I thought it would be something in the database, but no amount of searching found anything that looked like it would help. An RDP session is locked, when I try to connect I get the following message: The Guacamole server is denying access to this connection because you have exhausted the limit for simultaneous connection use by an individual user. Please close one or more connections and try again. I have logged out of that computer, I have restarted that computer. It is a Windows 10 computer. My user is able to connect to other computers (Windows 10 and Windows Server 2016) using the same guacamole session. >From the other computers, I am able to successfully RDP into the original problematic computer. From a different (admin) user account I get the same message trying to log into the problematic computer. I logged out of guacamole completely and logged back in, same message. I closed the chrome session entirely, upon trying again, same message. I closed chrome completely, opened an incognito tab, same message. I have restarted guacd AND rebooted the guacamole server. I have edited the session for this computer to allow "Maximum Number of Connections" to be 5 and "Maximum Number of connections per user" to be 5. From my admin user I have been able to kill the user session of the problematic user/computer (or, confirm it isn't there) and when I re-start the whole process I get the same connection error. The windows system logs show no errors, but I do believe I am seeing a successful authentication attempt. Somehow, this RDP session is locked and I can't unlock it; my worry is there is some database artifact triggering guacd to think the session is alive when it isn't. The logs in catalina.out show the following: 16:11:18.825 [http-nio-8080-exec-9] ERROR o.a.g.w.GuacamoleWebSocketTunnelEndpoint - Creation of WebSocket tunnel to guacd failed: Cannot connect. Connection already in use by this user. 16:11:18.896 [http-nio-8080-exec-6] WARN o.a.g.s.GuacamoleHTTPTunnelServlet - HTTP tunnel request rejected: Cannot connect. Connection already in use by this user. Joe Gullo Sysadmin, Web Designer, Artist http://www.surfrock66.com surfroc...@surfrock66.com <mailto:surfroc...@surfrock66.com> (714)926-0336
