The permissions granted to user (IUSR) are insufficient for performing this operation." when trying to view Report Site

The permissions granted to user (IUSR) are insufficient for performing this operation." when trying to view Report Site.

The permissions granted to user are insufficient for performing this operation. (rsAccessDenied)

Go to My Computer, Right click and get the User Management by clicking Manage. See the Users in the Machine. Right Click on the IUSR_MACHINENAME and view the Properties. Get the “Member Of” tab and add “Administrators” group in the Members List.

Now browse http://Server Name or IP/Reports/ (Report Browsers)
http://Server Name or IP/ReportServer (Report Manager)

Works fine !