Soon after installing reporting services for my SQL server 2012 on Windows 7, I got the error “User ‘DOMAIN\username’ does not have required permissions. Verify that sufficient permissions have been granted and Windows User Account Control (UAC) restrictions have been addressed” in web browser at http://localhost/Reports/ and http://localhost/reportserver/.
Right click Internet Explorer and select “Run as Administrator”. Now you will be able to access the below link http://localhost/reports/.
Now, to permanently fix the problem, click on “Folder Settings”
Fill in the below form and click OK.