Request for the permission of type 'System.Web.AspNetHostingPermission, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.

Just started using Umbraco CMS. I follow all the install guide steps but when I first ran the website I got this error message:

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

I check several security settings in the directory where the website source code existed with no lock.

The Fix:

IIS 7 – > Select the application pool –> Advance Settings – > Load User Profile = “True”

Load User Profile was set to “false” setting it to “true” solved the problem.