I have a cloud server with guacamole v1.0.0, tomcat8, mysql, nginx I created 100 user accounts and assigned each to a connection to N server
Later I decided to create a Group and I put all 100 users in that Group I configured the "Group" to have a connection to the N server *but I did not remove* the connection to the N server from each individual Guacamole User account. I found that when I logged in as any of those 100 users that User Account could no longer access the connection to Server N. I found that if I either: 1. removed the individual User Account checkbox for Server N connection 2. -or- remove that individual User Account from the "Group" then that User Account could again access Server N But if both were configured Guacamole would display a message about "internal database error" and the Connection to Server N would fail. Not sure if this is intended or a bug but it would seem that it shouldn't matter if the individual User Account has the Server N connection and that same User Account is a member of a Group that also has that same Server N "connection?