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bychris@SCI, March 10, 2014
AD Replication Check (with performance counters from DRA)
So far, so good - I'll need to see if it will actually produce an error with replication, but I wanted to respond to the 'get-object' issue.

I also ran into that, but only on some servers. The cause? Missing NTDS performance counters. If you check the counters list on a working server, you see NTDS. If you check a non-working server, NTDS is missing. Note that 'DirectoryServices' contains the same counters.

The fix for me was as follows:
1. Export this key from the working DC: HKLM\SYSTEM\CurrentControlSet\Services\NTDS\Performance
2. Import to the non-working DC.
3. Run: lodctr /R
4. Test

Some links...
* http://answers.splunk.com/answers/55409/not-receiving-performance-for-a-dc
* http://thwack.solarwinds.com/thread/58475