SSRS Report Deployment Issue: 

When we try to deploy any report some time this kind of issue will occur. Even we have proper Privilege on URL ( Site setting and folder setting in Report url )

In order to resolve this issue if you configuration is correct. 

You can login as run as admin and deploy the report but user how have this property set to 1 will not be able to deploy the report. 

To resolve this 

Go to SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System and set EnableLUA values as 0 and restart the server and then go to DAT/System administration/Setup/Business intelligence/Reporting Services and open report server, Click on validate it will validate successfully and you can deploy the report with user

You can find complete detail about this key here: https://msdn.microsoft.com/en-us/library/cc232765.aspx

Reference: https://technet.microsoft.com/en-us/library/gg724094.aspx

User roles and permission is very nicely explained here: http://bhushan.extreme-advice.com/user-roles-and-permissions-in-ssrs/

Walk through for defining permission on URL: https://www.mssqltips.com/sqlservertip/2793/sql-server-reporting-services-2012-permissions/