Q:

Not enough permission to enter SQL Server Reporting Services

I know that this question was asked a few times before, but none of the answers were helpful.
When I'm entering http://<localhost>/reports and enter credentials - there appears a message that this user doesn't have enough permission to enter. 
I've made sure that user is an admin during installation of SQL Server 2008 R2, then I make it a dbowner in the report server database. In Windows, that user also has admin rights and I'm using IE as administrator. 
What seems to be the problem? What should I do to deal with the problem?

A:

First check the site security settings using the Site Settings link the upper right corner and then selecting Security on the left. Ensure that they are listed as a system user.
Check the security settings on the root folder of report manager by using the Folder settings link on the toolbar. You'll also need to check the permissions on any folders that have broken security inheritance.

Useful links:

Grant User Access to a Report Server (Report Manager)
Understanding SQL Server Reporting Services Authentication
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