Error (rsAccessDenied) - 'NT AUTHORITY\NETWORK SERVICE' are insufficient

I did all the necessary settings to the reporting service so that my domain users can access the reporting service, but still I was getting rsAccessDenied error.

Then I read once solution in one of the forums in which there were few steps mentioned which solved my problem
1. Open http://localhost/reports
2. Go to Home Properties
3. Add a BUILTIN\Users and gave it Browser permissions and the problem was solved.