Counters group MSExchangeFDS:OAB is missing in Performance monitor after upgrade from Exchange 2007 to Exchange 2010.
I've run the following commands:
unlodctr "MSExchangeFDS:OAB"
cd c:\program files\microsoft\Exchange Server\V14\bin\perf\amd64\en
lodctr mdbperf.ini
lodctr alsperf.ini
lodcrt dscperf.ini
lodctr eseperf.ini
But, it doesn't help.