Error: Report Builder 2.0 is not installed as a click-once application on report server - SCCM 2012
When trying to create custom report in SCCM 2012 the above error msg will display in first instance.
Reason: If you have installed SQL Server 2012 R2, by default it installs Report Builder 3.0.
But SCCM adds a registry to check for Report Builder 2.0
Modifying the Report Builder version check from 126.96.36.199 to 188.8.131.52 will fix the issue.
Apply following registry key to remove the error:[HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\ConfigMgr10\AdminUI\Reporting]