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Lars H

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Restore DC - Exchange "react"?

My setup is DC Win2016 and Exchange 2016 running in Hyper-v environment and 5 users.

My DC needs to be restored from a 2 month old copy due to corruption (i tired to repair tools and setup an other "BDC" but is was not able to do due the job).

In the 2 month period there has been no new users / change to the users - only e-mails, contacts and calendar traffic/changes.

I don't "expect" the Exchange server to be "happy" seen and old DC?
Is the solution to dismount the DB´, install a new Exchange and mount the DB?

/Lars
Avatar of Mahesh
Mahesh
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you have only 5 users?

OR more?

AD and exchange installed on single server?

Since you have only 5 users, you can take any action right from formatting and start from scratch if wanted to but its not required

What issue you have with AD?
Avatar of Lars H
Lars H

ASKER

One win2016 is acting as DC and an other win2016 is hosting the Exchange 2016 - two virtual machines hosted on one server with hyper-v

5 users.

"Start from scratch" = install new Exchange and mount old DB?  

Running a DCdiag.exe gives a lot of errors fx:

Starting test: MachineAccount

         The account DC2 is not trusted for delegation.  It cannot replicate.
         The account DC2 is not a DC account.  It cannot replicate.
         Warning:  Attribute userAccountControl of DC2 is: 0x1000 = ( WORKSTATION_TRUST_ACCOUNT )
         Typical setting for a DC is 0x82000 = ( SERVER_TRUST_ACCOUNT | TRUSTED_FOR_DELEGATION )
Sounds like the DC backup hasn't been working properly if Exchange cant communicate with it.  Are the workstations authenticating with the domain ok? Any errors in the event logs? Has the DC got the same IP address when it was restored?
Avatar of Lars H

ASKER

Yes workstations authenticating, error in the logs...

I have investigating and trying to fix it for almost 2 weeks.

Is there somebody who is able to give me an answer to my initial question?
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