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Outlook Popup Window after Exchange migration

Posted on 2011-05-06
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We have recently migrated our clients from an in-house Exchange server to a 'cloud' type solution (basically a remote Exchange server somewhere).  We have not done anything to uninstall the old Exchange server, the only thing that we did was turn off the old Exchange services.  Now we are getting a popup with the title bar saying 'Connect to <domain>' and it says 'Welcome back to <domain>', with a username and password prompt.  This occurs quite frequently throughout the day, if the client cancels out of it a few time they can get into their email.
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Question by:INSL
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Expert Comment

by:takenoco
ID: 35709676
How are you connecting to the remote exchange server? via https?  are you using their AD to authenticate?  

What is the version of outlook and exchange?
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Author Comment

by:INSL
ID: 35710153
We are connecting to the new Exchange server through https.  The Outlook client version is 2007, and the Exchange server and structure behind it are unknown due to the service being supplied by a different vendor, there is no way that they are using our AD to authenticate though.
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Expert Comment

by:FPO
ID: 35710299
Check if they have an ldap address book configured on the outlooks (connected to the old Exchange).

 Try also to reconfigure a new outlook profile.
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Expert Comment

by:takenoco
ID: 35721935
i am thinking the connection between Outlook and exchange server got disconnect from time to time.  Do you notice if the outlook complain it can't connect to exchange server before the username/password window pop up?
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INSL earned 0 total points
ID: 35826028
We found that when we uninstalled the Exchange 2003 server that it must have removed some DNS entries, since as soon as we uninstalled the Exchange 2003 server the popups stopped.
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Author Closing Comment

by:INSL
ID: 35868952
Needed to uninstall old Exchange 2003, must have had some old DNS entries
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