Citrix Web Interface 5.4 – Internal Error – This webpage … technical difficulties


Having some weird problems with the Citrix Web Interface? version 5.4 saying it has an Internal Error. Some users can access & launch stuff.. then again,  some users can access but cannot launch? They get the next error message:

“The Web site is experiencing technical difficulties. We apologize for any inconvenience. The internal error may only be temporary. Try reconnecting and if the problem persists contact your administrator.”

Then you will also find some errors in the Event Viewer Logs on the Web Interface Servers  (check)

First: Citrix Web Interface – EVENT ID 21002
Second: ASP.NET – EVENT ID 1309

Have a look over here

Citrix Forum Thread
The Hotfix link:



Ronny Holtmaat.