Hi I am trying to migrate mailbox(Exchange 2013) PST from one forest to another, after attaching PST to target mailbox, I can see all emails from OWA, but unable to access old outlook profile. Is there any property need to be set before and/of after PST imprted to new mailbox ? I have also tried to update the ExchangeGuid of mailbox but no success.

can anyone give me the steps for cross forest PST migration which will not impact outlook profile means no need to reconfigure outlook and it will not download all emails

You can't see a PST from OWA, so I assume you imported the PST into a mailbox.

The old Outlook profile would be pointed to the old server so you wouldn't be able to see anything in the new mailbox.  I would create a new profile.

There is no way to do what you want without "impacting" the Outlook profile.

Thanks ED, but I am sure there must be some way to avoid reconfiguring outlook profile, else all the migrated users need to download all the emails.

Thanks

Hi,

If it's unable to access old outlook profile, the only way we can do is to recreate the profile. There is nothing else we can do on exchange side to avoid this.

Best Regards.