Today, I tried to connect my SCOM 2012 R2 UR8 to OMS. So I follow the step-by-step on TechNet and I had this error:
Error 2200: Unable to register to Advisor Server. Please contact the system Administrator.
After few investigation, I found that by default, the new management pack for OMS (Advisor) was not imported. So, I added it. The source of these MP updates are located in C:\Program Files\Microsoft System Center 2012 R2\Operations Manager\Server\Management Packs for Update Rollups. The following MP has been imported:
When it’s done, close your SCOM console and reopen it. You will see that the name is now Operations Management Suite and not Advisor:
You can now perform the new connection to OMS: