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dcdiag DFSR and other errors after migrating windows server 2008 R2 to windows server 2012 Active directory

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Last Modified: 2015-07-01
Hi all,

After migrated Windows Server 2008 R2 to Windows server 2012 R2 AD, I demoted the Windows server 2008 R2 and change the server name and ip address to something else. From the new Windows Server 2012 R2 AD, I changed the new Windows Server 2012 R2 AD back to the old Windows server 2008 R2 server name and ip address.  But when I ran dcdiag /v /q to check any error.. I got the DFSREvent and other errors from below.  Can someone look at the DFSR and other errors and possible to fix it?

Regarding the DFSREvent... I found another post below of how to correct FRS\DFSR object. However, I was not able to do it and not sure if it is related to my error...

Also you need to follow steps in below article on 2012 DC post successful rename operation to correct FRS \ DFSR object references
http://technet.microsoft.com/library/cc794759(v=ws.10).aspx



C:\Windows\system32>dcdiag /v /q
         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.
         ......................... SERVER1 failed test DFSREvent
         An error event occurred.  EventID: 0x0000272C
            Time Generated: 02/26/2015   17:02:36
            Event String:
            DCOM was unable to communicate with the computer 192.168.0.1 using
any of the configured protocols; requested by PID      a58 (C:\Windows\system32\
dcdiag.exe).
         An error event occurred.  EventID: 0x0000272C
            Time Generated: 02/26/2015   17:02:37
            Event String:
            DCOM was unable to communicate with the computer 192.168.0.1 using
any of the configured protocols; requested by PID      a58 (C:\Windows\system32\
dcdiag.exe).
         An error event occurred.  EventID: 0x0000272C
            Time Generated: 02/26/2015   17:03:45
            Event String:
            DCOM was unable to communicate with the computer 192.168.0.1 using
any of the configured protocols; requested by PID      3bc (C:\Windows\system32\
dcdiag.exe).
         An error event occurred.  EventID: 0x0000272C
            Time Generated: 02/26/2015   17:03:46
            Event String:
            DCOM was unable to communicate with the computer 192.168.0.1 using
any of the configured protocols; requested by PID      3bc (C:\Windows\system32\
dcdiag.exe).
         An error event occurred.  EventID: 0x0000272C
            Time Generated: 02/26/2015   17:19:53
            Event String:
            DCOM was unable to communicate with the computer 192.168.0.1 using
any of the configured protocols; requested by PID      bcc (C:\Windows\system32\
dcdiag.exe).
         An error event occurred.  EventID: 0x0000272C
            Time Generated: 02/26/2015   17:19:55
            Event String:
            DCOM was unable to communicate with the computer 192.168.0.1 using
any of the configured protocols; requested by PID      bcc (C:\Windows\system32\
dcdiag.exe).
         ......................... SERVER1 failed test SystemLog
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