SecurityException: Request for the permission of type “System.Security.Permissions.EnvironmentPermission” failed in CRM 2011 plugin.

We will get this error while using Environment.MachineName
in our plugin code to get the Server Name in case of Sandbox.

Bye.

Security Exception: That assembly does not allow partially trusted callers in CRM 2011 plugin.

Hi,

We were getting the below error in one of our plugins. The reason was because we were making use of HttpContext class of System.Web assembly.

For our on-premise deployment it was working fine, we were getting this issue only on registering plugin on Sandbox mode.

We can find the explanation here

http://social.microsoft.com/Forums/en-US/crmdevelopment/thread/302377cf-97bd-4fe9-b7d0-fa7f08152927/

Bye.