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Can't uninstall Exchange 2003

I have migrated our company to Exchange 2007 and I'm trying to uninstall Exchange 2003 from the server. I have moved everything off, but when I try to run the uninstall, I get the following error:

"The component 'Microsoft Exchange Messaging and Collaboration Services' cannot be assigned the action 'Remove' because:
-One or more users currently use a mailbox store on this server. These users must be moved to a mailbox store on a different server or be mail disabled before uninstalling this server."

The interesting thing is, I've deleted all the mailbox stores! There's no way a user could be residing on the server. I ran into this issue a few years ago trying to remove an Exchange 2000 server and finally had to "force" it, but I'd really rather take this one out gracefully. I've followed the instructions in both these articles, but when I run the install program I continue to get the error.

http://www.msexchange.org/articles_tutorials/exchange-server-2007/migration-deployment/removing-last-exchange-2003-server-exchange-2007-part1.html
http://technet.microsoft.com/en-us/library/bb288905.aspx

Before deleting the store, I also ran ADSIEDIT.MSC and looked in the homeMDBBL properties and the only things listed were the system accounts (System Mailbox, SMTP & Microsoft System Attendant).

Anyone else seen this and have an idea? Thanks in advance for your help!
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RoboMunch
Asked:
RoboMunch
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1 Solution
 
MOPSCCommented:
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RoboMunchAuthor Commented:
Yeah, I tried that one too. I tried it before I deleted the store files and again just now and there aren't any users listed on the Exchange 2003 server.
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RoboMunchAuthor Commented:
Resolved.
After doing all the searches through ADU&C, I finally just dumped the AD to a file, searched it and found a couple of lingering users. Uninstall finally ran and I was able to remove Exchange. FYI, the command to dump the AD was:
csvde -f c:\ad.csv
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