Can't uninstall Exchange2003 after migrating to Exchange2010. One or more users currently use a mailbox store on this server.

If I try to uninstall Ex2003 via System->Add/Remove Programms->Microsoft Exchange, I get following error message:
"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 e-mail disabled before this server can be uninstalled"
I've already searched for AD users with old exchange attributes, but nothing found.
Could you help me?
iconscmAsked:
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AkhaterConnect With a Mentor Commented:
what you need to run is

ldifde -d "DC=ROOT,DC=COM" -f c:\output.txt -r "(&(objectCategory=person)(objectClass=user)(msExchHomeServerName=/o=ORGANIZATION NAME/ou=ADMINISTRATIVE GROUP NAME/cn=Configuration/cn=Servers/cn=SERVER-NAME-TO-REMOVE))"

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of course replace the variables by the correct entries.

once you do check the output.txt file
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MetaltreeCommented:
Have you tried this? I know I've had to do this twice.

http://support.microsoft.com/kb/924170
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iconscmAuthor Commented:
yes, I did, but I see all users have the exchange2010 as a exchange home server.
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Watch this video to see how easy it is to make mass changes to Active Directory from an external text file without using complicated scripts.

 
Manpreet SIngh KhatraSolutions Architect, Project LeadCommented:
Go to ADUC and Custom Search and put this in

(&(objectClass=user)(objectCategory=person)(msExchHomeServerName=/o=EXCHANGEORGNAME/ou=First Administrative Group/cn=Configuration/cn=Servers/cn=SERVERNAME))

If you find any account simply go with Delete Mailbox or Remove Exchange Attributes

http://theether.net/kb/100016

- Rancy
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iconscmAuthor Commented:
I did, I can't find any user with mailbox from exchange2003, I have already deleted a mail store database from exchange2003 via ExchangeServerManager. and nothing -(
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iconscmAuthor Commented:
thank you very much!!!
with this command I got output.txt with 1 record. it was a user, that hadn't mailbox but had "Exchange Home Server" in his attributes.!
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AkhaterCommented:
my pleasure
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Manpreet SIngh KhatraSolutions Architect, Project LeadCommented:
Restart the server once and uninstall ... if still not remove manually

- Rancy
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