When attempting to migrate users to Exchange. you receive the following prompt
The Exchange Migration Admin could not access the user's mailbox.
In the WLOG file you will see
Error: Outlook is using an old copy of your Offline Folder file (.ost). Exit Outlook, delete the .ost file, and restart Outlook. A new file will be automatically created the next time you initiate a send/receive.
Outlook is using an old copy of your Offline Folder file (.ost).
RESOLUTION 1:
Exit Outlook, delete the .ost file, and restart Outlook. A new file will be automatically created the next time you initiate a send/receive.
RESOLUTION 2:
Delete the Outlook profile for the migration account and recreate a New Profile.
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