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Manually restore AD

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Last Modified: 2016-10-27
Hi.

A customer has lost administrative access to his only server.  No other member servers in AD.  No other domain controllers.  5 PCs and 6 User objects.  It's Server 2008 R2 Standard and he is running Acronis Backup.
I can narrow down the incident to last weekend:  We accessed the server as administrator on saturday 9am.
From Monday on I get "user is deactivated" on logon.  Strange:  I get this regardless of the password - even on a wrong password.

I noticed later, that obviously users frequently access the server desktop as administrator via RDP to do something in a software that runs only there.

Yuck!

Anyway - I have to restore this somehow and my question is this:  Can I just copy back the ADS database at C:\Windows\NTDS from my backup?  Acronis won't start in directory services recover mode...

Or does anybody have an equally simple idea?

Thanks,
Ralph
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