Not able to open restricted permission messages (Rights Management Services - RMS)

Last week I worked on a RMS issue, which I couldn't find a solution. However, a teammate of mine who works with security has sent me some instructions which have solved the problem.

• Start->Run->compmgmt.msc
• Expand Services and Applications
• Click on Services
• Stop “cryptographic server” service on end user machine (keep this windows open).  Right click on the service and select stop.
• Rename c:\winnt\system32\catroot2 directory to c:\winnt\system32\catroot2.old
• Start “cryptographic server” service on end user machine.  Righ click on the service and select start.