Citrix Web Interface error at start up Unrecognized error: 500 Internal Server error

Posted on 2012-04-05
Last Modified: 2012-06-21
When I first start the Citrix Online Plug-in it gives the error "Unrecognized error: 500 Internal Server error"
I also get the error, "The citrix online plug-in server returned an unrecognised error: %1.

It takes me 3-5 tries to finally connect
Question by:J.R. Sitman
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LVL 23

Accepted Solution

Dirk Kotte earned 500 total points
ID: 37815384
sometimes the .net cache cause this problems.
shutdown iis and delete (rename) the cache.
somewehere within the following path:
C:\Windows\Microsoft.NET\Framework\v???\Temporary ASP.NET Files\your site name
restart IIS
clear the local browser cache (dont know why but nessesary at my notebook)

possible some Virusscanner or local firewall produce tis error.
(seen with symanted endpoint protection or MCAfee)

Author Comment

by:J.R. Sitman
ID: 37815900
Before I start deleting things I want to be crystal clear.  In the Temporary ASP.NET folder I have citrix_pnagent and citrix_xenapp.  Delete 1 or both?
LVL 23

Expert Comment

by:Dirk Kotte
ID: 37816618
rename the folder. if your weninterface not work it is "citrix_xenapp" . You font this within the path of your website.
afrer renaming - start IIS  and opening the website , this folder are recreated and filled.

but you can rename booth. this cost you only some additional seconds at the next site-opening.
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Author Comment

by:J.R. Sitman
ID: 37816897
even after stopping the service, I can't rename them.  States in use by another program.  Any ideas?
LVL 23

Expert Comment

by:Dirk Kotte
ID: 37817142
stop the services
- web-publishing
- iisadmin
or use iisreset (stops and restarts the IIS services)

i am able to rename the folders.

Author Comment

by:J.R. Sitman
ID: 37817168
Thanks, that worked

Author Comment

by:J.R. Sitman
ID: 37817169
I'll let you know if the error is gone

Author Closing Comment

by:J.R. Sitman
ID: 37820308

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