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DC not communicating with each other (Windows 2008 R2 & 2102R2)

I had three Domain Controllers:
LPIDC1 (Windows 2012 R2) local
LPIDC2 (Windows 2008 R2) local removed from domain
LPIDC3 (Windows 2008 R2) remote location

LPIDC2 has failed and removed from the domain by dcpromo.
LPIDC1 & LPIDC3 are not communicating with each other.

I am not sure what to do to resolve this issue. I have included dcdiags from yesterday and today.

Thank you for any help.
lpidc1-20150217.log
lpidc120150218.log
lpidc3-20150217.log
0
jzaino
Asked:
jzaino
1 Solution
 
jzainoAuthor Commented:
I believe it may be our Windows 2012 R2 server causing the errors. I have this message happen when I try to connect to our webmail.

Active Directory operation failed on lpidc1.lusterproducts.com. The supplied credential for 'NT AUTHORITY\SYSTEM' on Bind operation is invalid. Error Code: 0x31.
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OriNetworksCommented:
Do you know if the failed server held any FSMO roles?
Do you have a backup of the failed server?

I would recommend temporarily restoring the failed server to bring active directory into a stable state and gracefully removing if possible
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Will SzymkowskiSenior Solution ArchitectCommented:
I would run the following commands...

repadmin /replsum
repadmin /showrepl
repadmin /bridgeheads

netdom query fsmo
netdom query dc

dcdiag /v

You said that your DC's are not communicating and they are in different sites. You KCC might not be working correctly. Temporarily manually create a connection from Site1 to Site2. Once replication has started remove the connection and allow KCC to automatically make the connections.

I would also recommend running the active directory BPA.
https://technet.microsoft.com/en-us/library/dd391875(v=ws.10).aspx

Will.
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