One of my DCs this one is a Server 2012 R2 64bit VM. apparently stopped responding last night around 12AM. even though in VM v sphere the GUI would still show up in the console, I could not RDP into it. I force rebooted it. and after a restart so far it's working. Though from last night at 12AM til this morning when I restarted it at 8:49AM. there is a Event log entry about every 5 mins or so "Security policies were propagated with warning. 0x534 : No mapping between account names and security IDs was done."
Too bad when I do FIND /I "Cannot find" %SYSTEMROOT%\Security\Logs\winlogon.log there is no winlogon.log. Guess I will enable that log for the future in case it happens again.
We are using the Default replication NTDS Settings that were auto created. One of my guys had change the default replication schedule to 30mins however I changed it back to 90 today.
This is a NTDS/Replication Setup
BB-DC01--->CB-DC01> BOTH MPL-DC01 & FL-DC01
So Our Main location BB-DC01 is replicating with CB-DC01, and all others are only replicating with CB-DC01 (MPL-DC01 & FL-DC01 do not replicate with each other, only CB-DC01, Nor do the replicate with BB-DC01).
we are connected over all Fiber 1GB and 2ms latency. Should I have all DCs replicate with all other DCs?
Also when I run DCDIAG on BB-DC01 or CB-DC01 I get the following SYSVOL error, which the other two DCs do not get.
Starting test: FrsEvent
There are warning or error events within the last 24 hours after the
SYSVOL has been shared. Failing SYSVOL replication problems may cause
Group Policy problems.