On Fri, Feb 9, 2018 at 5:55 AM, sebastian.k <kowatsch.sebast...@outlook.de>
> Hi there,
> I've setup guacamole on centos 7.4/rhel with the new MS-SQL extension from
> version 0.9.14.
> The problem is that users get "corrupted". After a fresh install I can
> once or twice with the guacadmin user without problems. But on the third or
> forth login attempt I'm getting. "Unexpected internal error". I logged out
> correctly every time. I also tried installing MS-SQL locally but the
> are the same.
> It would be great if someone could tell me what I'm doing wrong.
> Is somebody using MS SQL 2016 with latest Guacamole 0.9.14 without any
> Thanks in advance
It's definitely possible there is an issue with the MS-SQL Extension, but I
have not run into this particular behavior. I doubt very much that the
user - or at least the user information in the database - is actually
getting corrupted. It's more likely some sort of connection error between
the extension or JDBC driver and SQL Server. So, a few questions for you...
- What version of Java are you using?
- What version of Tomcat are you using?
- What make/model/version of the MS-SQL JDBC driver are you using?
- If you restart Tomcat, does the problem go away?
- If you create a new user while you're able to log in, does that user
account work when guacadmin does not?
- Are there any system-level messages - anything in dmesg output, or
/var/log/messages, etc., that indicates any other sort of problem (OOM,
Also, if you could, could you configure the Guacamole Client for either
debug or trace logging and post the output (preferably in a PasteBin or
something like that, and not in the e-mail)? This can be done by creating
a logback.xml file in GUACAMOLE_HOME, and you can find instructions for
what that file needs to contain here: