I have a question. I am running dcdiag (with /c /v /e switches); all DCs are Win2012 R2, but domain/forest level is still Win2008 R2.
I am seeing that some tests fail (such as DFSREvent) fail with "RPC server is unavailable", when querying other DCs. Now, we're not really using DFS at all (yet). But I am also seeing it on things like the KCC Event log. And system log.All the "log" tests, it appears ... The error is error 0x6ba. I've found references that this might be an expected error if querying Win2003 DCs, but not Win2012 R2 servers. All the other tests - advertising, Machine Account, NetLogons, ObjectsReplicated, etc - they are all passing. It's only these certain tests that are failing. If I do dcdiag locally on the server mentioned in the fail message above, it all passes; I don't see that error. repadmin (/showrepl and /replsummary) are all fine. So, my question: is it normal for the "log" queries to fail in dcdiag, when querying DCs remotely? As I say, if I do dcdiag /c /v locally on each of the servers that show as fail, the test passes fine (those log services are running fine). Do I need to adjust my firewall, if I want to run the tests against all servers from just one DC?
