I upgraded my user profile service application from SP2010 to SP2013. I upgraded only ProfileDB and Social DB and created a new Sync DB for SP2013.
After creating user profile service,when i tried to start the "User profile synchronization service" it is showing "starting" for few mins and then falls back to Stopped.
I am running the "User Profile Synchronization service" with the Farm account. FIM service is disabled and logged on with Local system account. FIM synchronization service is logged on with farm account.
Farm account has been added to the local admin group,user profile service application's administrator group ,user profile service application's permission group.
On checking the event viewer,I see the below error message when user profile service synchronization service fails to start:
Performance counters for the FIMSynchronizationService (Forefront Identity Manager Synchronization Service) service are already in the registry, no need to reinstall. This only happens when you install the same counter twice. The second time install will generate this event.
How to fix the issue and start the "user profile synchronization service"?