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Issues while replication between sites

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  • Issues while replication between sites

    Hi,

    We are having 3 sites in 3 locations. Each site is having one AD server. There was some firewall activity at location 3 after which server at Location 1 and Location 2 are not able to "replicate now" to the site at Location 3 from "sites and services". But "replicate now" is fine from all the 3 locations to the sites for Location 1 and Location 2. Even from Server 3, "replicate now" is fine for all the 3 sites.

    Location 1 -> Site 1 -> Server 1

    Location 2 -> Site 2 -> Server 2

    Location 3 -> Site 3 -> Server 3 -> Firewall Changes happened at this location.

    The error which is seen while "replicate now" is "The following error occurred during the attempt to contact the domain controller Server 3: RPC Server is unavailable".


    From the Client machines at Location 3, while giving gpupdate , we are getting the following errors:

    User policy could not be updated successfully. The following errors were encount
    ered:

    The processing of Group Policy failed. Windows could not resolve the user name.
    This could be caused by one of more of the following:
    a) Name Resolution failure on the current domain controller.
    b) Active Directory Replication Latency (an account created on another domain co
    ntroller has not replicated to the current domain controller).
    Computer policy could not be updated successfully. The following errors were enc
    ountered:

    The processing of Group Policy failed. Windows could not resolve the computer na
    me. This could be caused by one of more of the following:
    a) Name Resolution failure on the current domain controller.
    b) Active Directory Replication Latency (an account created on another domain co
    ntroller has not replicated to the current domain controller).


    Please help and let me know for any further clarification.

    Regards,
    Anishk

  • #2
    This sounds like a network or firewall problem. What kind of connection do you have between the sites?

    Comment


    • #3
      Try running:

      DCDIAG - Check DC replication
      DCDIAG /TEST: DNS


      Check to make sure GPO's are syncing between all DC's in SYSVOL.

      *Also, there is no space after the colon before "DNS". I had to do that here because it was placing a smiling face () there. Damnit Petri!

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