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Active Directory - Error 8614 - Do all DC's need to replicate

Posted on 2016-10-11
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Last Modified: 2016-10-27
We have a domain with 10 sites.
We have noticed after running a "repadmin /replsummary" that not all of our DC's are communicating and that we are getting a

 "(8614) The directory service cannot replicate with this server because the time since the last replication with this server has exceeded the tombstone lifetime."

We are not experiencing issues with replication but we think that at least one of the DC's should be able to replicate with all of the DC's.

Is this fine to leave this as everything is working or should we look at resolving this problem?
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Question by:Pmb2000
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by:Deepin
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How many are not syncing?

you are going to have to kill those DC's and then clean the rest of your AD.....and then rebuild them and bring them back in...
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by:Pmb2000
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Half of them are giving the error - (8614) The directory service cannot replicate with this server because the time since the last replication with this server has exceeded the tombstone lifetime.

But we are having no issues with AD objects being replicated.

What is the best method for the cleaning up of the AD?

Are we best to demote and then bring them back on. or what would you suggest?
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by:Deepin
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Niten Kumar earned 250 total points
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Best would be to demote the non-replicating DC's one at a time.  Demote one, rebuild and promote.  Make sure sites and inter-site links are defined properly.  Test the replication using:

1.   repadmin /replsum
2.   repadmin /showrepl

If all is good then do the same with problematic dc's in other sites.

If in case demotion fails then metadata cleanup will be required which will be best cleaned up through the command line utility ntdsutil.

For help you check out this video which thoroughly explains its usage.  You will find the metadata cleanup part at the second half of the video.

https://www.youtube.com/watch?v=DzJTCYtp7XI
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by:Pmb2000
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Great Guys.

Thanks!!
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