Server Error in ‘/’ Application.
Configuration Error

Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately.

Parser Error Message: Unable to read the security policy file for trust level ‘full’.

Source Error:

[No relevant source lines]

Source File: Line: 0

Version Information: Microsoft .NET Framework Version:2.0.50727.1433; ASP.NET Version:2.0.50727.1433

Solution:

The original error suggests that the value for trust level for machine.config or web.config in web root was mistyped – it is case sensitive. Can you open the machine.config in c:\windows\microsoft.net\framework\v2.0.xxxx\CONFIG\machine.config, and search for “<trust level”. You will probably find a section that looks like this:

<trust level=”Full” originUrl=”” />

Make sure it is typed in that way – “Full” not “FULL”. Then do the same check for web.config in c:\inetpub\wwwroot.