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Offline Address Book Error with Exchange 2010 migration

Posted on 2011-02-11
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Last Modified: 2012-08-13
Hi,

We are in the process of migrating a client to Exchange 2010 from 2003 - all looks good. We have however one error. On mailboxes we've move to the Exchange 2010, when we try and download the OAB in Outlook 2003 we get an error - "An error occurred whilst opening the Microsoft Exchange offline address book files......". The OAB is hosted on the Exch 2003 server and a replica is on the 2010 server. Do we need to move the OAB to the 2010 server and upgrade it? I'm holding off doing this on the basis it may affect the users on the 2003 server?

Thanks
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Question by:msbccs
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by:danubian
ID: 34870329
I think is good for you to install EBPAT and let him to check and propose solution.

If the problem is still not solved then, take also a look to http://msexchangeteam.com/archive/2007/01/11/432158.aspx
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by:danubian
ID: 34870338
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by:msbccs
ID: 34897083
Hi,

EBPAT did not return anything of concern. Additonally I've applied Exch 2010 SP1 and homed the Default OAB on the 2010 server. Still no joy. The only thing I've not done is upgraded the OAB so it can be managed by the 2010 server. E.g. It's still managed via ESM on the 2003 server.

Thanks
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danubian earned 125 total points
ID: 34905214
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by:msbccs
ID: 34925351
Thanks for the links. These are the main arcticles I've used for this migraiton and previous ones. In the end I created a new OAL and assigned it to the mailbox DB. No idea what was up with the original, but not to worry all working now.

Thanks
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