Cannot uninstall old Exchange server after migration

aconway
aconway used Ask the Experts™
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I am trying to uninstall Exchange 2003 from my old server.  I performed a server migration a couple months ago following this guide: http://www.amset.info/exchange/migration.asp 

I had some issues, but eventually got everything sorted out, all the mailboxes moved, public folders, replications, roles, etc.  I ran DCPromo on the old Exchange server and removed it from ADS.  Now I am trying to uninstall Exchange from Add/Remove programs and it's telling me that One or more user has a mailbox on the server and it has to be moved before I can uninstall Exchange.

The only 3 mailboxes that show up in the ESM on the old server are the SMTP, System Attendant and SystemMailbox.  There are no user mailboxes left.  Everything has been moved and running on my new server for over a month now.  I need to get rid of this old Exchange Server so it's no longer recognized as part of my Exchange topology...



 
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>>I ran DCPromo on the old Exchange server and removed it from ADS

Where in the guide does it say to do that?

You have just fried exchange - I would try reinstall it on that server, and then go through the bottom of that migration guide where it shows you how to find rouge mailboxes.

-red

Author

Commented:
I had another DC already up and running before I ran DCPromo on the old server.

Author

Commented:
It wouldn't uninstall before I demoted it either... demoting it was something I was doing along the troubleshooting lines...
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Author

Commented:
and there was a rogue mailbox, found deleted and now it uninstalls.  That was the problem.
You never, ever demote an exchange server (or promote it for that matter) - dcpromo'ing an exchange server is not part of any troubleshooting line, and should not be done.

Glad to hear you got it sorted

-red
David HaycoxConsultant Engineer

Commented:
We have had the same problem, regarding someone demoting the DC before removing exchange.

We now have a new DC and Exchange how do we remove any entries or information pointing to the old exchange server?

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