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Recreate AD on an SBS 2008 - Can it be done?

Last Modified: 2015-11-15

This is an unusual one, but I would love to avoid rebuilding this server.

It is a SBS 2008,  only about 10 users, but big mailboxes and hosting a complicated production website.

Approximately 6 months ago something happened to the  NTDS.DIT file.  It carried on working though and I only discovered now that there is a problem - too late for backups to be useful.  If I try to add a user it fails and generates an error, besides that it works perfectly.

NTDSUtil says the file is corrupt.  I have tried all combinations of NTDSUtil and ESENTUTL.  This will not fix the file in such a way that the AD service will start (even when NTDSUtil gives the file the all clear).

In a non-SBS situation it would be straightforward to add another DC, promote it and remove AD from the problem server, then add the original DC server back again. I think this would work here because the data in AD is all readable.

But I have read that with SBS it could be problematic to follow this route, because it wants to be the only DC.  SO my question is could I do this, and if so how?

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