VOTE: Clonezilla
Did you try to use the IP Adress instead of DNS Name in the Connection settings ?...
If i put the ip address into connection information instead of DNS name it works...
Have same Problem on one installation - did you get yours resolved ? It seems that...
Do you http or https to the guacamole server ? i had such behaviour on using http...
Fine that its working for you now :) <Location new-path="" websocket-tunnel=""> you...
Here is information on changing the location from /guacomole/ to somewhat else like...
Here for Apache: Changing the path If you wish to serve Guacamole through Apache...