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From David Blackstone <jdavidb2...@gmail.com>
Subject Re: Some RDP connections don't work
Date Tue, 20 Dec 2016 19:16:45 GMT
NLA is the solution!  I have no idea what is configured on some of these
servers vs. others to require it.

On Tue, Dec 20, 2016 at 1:10 PM, Mike Jumper <mike.jumper@guac-dev.org>
wrote:

> On Tue, Dec 20, 2016 at 8:00 AM, systemreggie <jdavidb2006@gmail.com>
> wrote:
> > I have Guacamole installed and working with both RDP and VNC, but
> > occasionally I am encountering systems to which I cannot connect with
> RDP.
> > I can connect to these systems just fine with Windows Remote Desktop but
> not
> > Guacamole.
> >
> > When I try to connect to these systems with Guacamole I get this error
> > message: "The remote desktop server encountered an error and has closed
> the
> > connection. Please try again or contact your system administrator."
> > Sometimes instead it says "You have been disconnected."
> >
> > In syslog I see messages like these:
> > ...
> > Dec 20 10:11:02 remotelogin guacd[10531]: Error connecting to RDP server
> > Dec 20 10:11:02 remotelogin guacd[10531]: Connection did not succeed
> >
>
> It sounds like the RDP server is rejecting the connection outright.
> Normally this means that the authentication settings or credentials
> are incorrect. More on this below.
>
> > While in catalina.out I see Java exceptions like these:
> > 10:12:17.211 [http-bio-8080-exec-6] DEBUG
> > o.g.g.w.GuacamoleWebSocketTunnelEndpoint - Connection to guacd closed.
> >
>
> That exception in catalina.out can be safely ignored. It's only being
> logged as such because debug-level logging is enabled, and exceptions
> are indeed thrown when the socket is closed.
>
> >
> > I read somewhere the suggestion that for Windows 10 I needed to set my
> > security mode to TLS encryption and check "ignore server certificate."  I
> > have done that but it doesn't seem to change anything.
> >
>
> That would indeed be suggestion, as well... but if you've already done
> so, there must be a different reason.
>
> > Any suggestions how I can get connected or diagnose what is going wrong?
>
> Is your RDP server perhaps configured to require NLA?
>
> - Mike
>

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