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This article applies to: ML v7, ML8, MultiStore

The application attempted to perform an operation not allowed by the security policy.


Symptoms 
All the pages of the site works fine, except for the admin home page.  The error below is only displayed within the admin home page.   

Server Error in '/' Application.

Security Exception

Description:  The application attempted to perform an operation not allowed by the security policy.  To grant this application the required permission please contact your system administrator or change the application's trust level in the configuration file.

Exception Details:  System.Security.SecurityException: Request for the permission of type 'System.Security.Permissions.ReflectionPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.

Cause 
The host is using a modified trust environment which causes a part of the admin home page to not work properly.

Solution 
Please contact your host to ask them to change your application's trust level.  The application needs full trust, or standard medium trust.