When accessing Web Interface the logo and page appears with the error:

An internal error occurred. Please contact your system administrator.

Further information can be gained by setting the following parameter in C:\Inetpub\Wwwroot\Citrix\MetaFrame\web.config:

customErrors mode="Off"

This gives the ASP.Net error:

Server Error in '/Citrix/MetaFrame' Application.
Access to the path "C:\WINDOWS\Microsoft.NET\Framework\v1.1.4322\Temporary ASP.NET Files\citrix_metaframe\4e9a73f8\aa8a5133" is denied.

This error occurs because the account ASP.Net is running as (v1.0 ASPNET/v1.1 NETWORK SERVICE) does not have access to the "Temporary ASP.NET Files" directory.

To grant permissions use Explorer or run the following command:

cacls "%SystemRoot%\Microsoft.NET\Framework\v1.1.4322\Temporary ASP.NET Files" /e /t /g "NETWORK SERVICE:F"


This error has also been known to be caused by the "OfficeScan NT Proxy Service" in Trend OfficeScan 8.0. Disabling the service resolves the issue (courtesy Derek Stewart).


See Also:

"System.Web.HttpException: Request timed out" at Web Interface login on Secure Gateway
http://theether.net/kb/100057

PRB: CS0013 or CS0016 Compilation Errors in ASP.NET Web Applications
http://support.microsoft.com/kb/825791

How to Disable the Default Error Message in Web Interface 3.0
http://support.citrix.com/article/CTX103673

Ripped off by Citrix: http://support.citrix.com/article/CTX111722