Outlook error on Exchange 2010

Some users receive this message after their mailbox is moved from exchange 2003 to 2010: The connection to the microsoft exchange server is unavailable.  Outlook must be online or connecte to complete this action.  

Please advice.  Thanks in advance.  
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If the user closes Outlook and re-opens it do they get access?  

Can you check the settings for the mail account and let us know if it shows the 2010 server or the 2003 server as the mailbox location?  

Are you able to create a fresh Outlook profile and access the user's mailbox on the new server?

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What version of outlook are you using?
if 2003, you need to setup the profile from scratch again
Spike99On-Site IT TechnicianCommented:
I don't if you need to clear out the eamail profile & set it up again from scratch, can't you just use the Mail applet from the control panel to point the user's account to the new exhange server?

if there are a lot of user with this problem and helping each user individually is prohibitively time consuming, then you could create a PRF file to point users mail profiles to the correct exchange server.
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nav2567Author Commented:
They get access when they re-open Outlook.

The mail profile shows the Exchange 2010 server.  

What do you mean by refresh Outlook profile?  Delete and re-create?  Do I still need to do that if re-open works?

We use Outlook 2010

No, you're following the correct procedures.  If the mailbox is moved from 2003 to 2010 while the user is accessing it, they will lose connection to the server until they restart Outlook.  General best practice would be to move mailboxes in groups, and sent out a maintenance notification to the group before the move occurs telling them to restart (or open) their Outlook after the maintenance period is complete.  This will stop you from having to speak individually to every user when their Outlook disconnects.
nav2567Author Commented:
Thanks everyone.
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