Attempting to migrate users mailboxes using On Demand Migration returned the following error:
Error creating target session. The account does not have permission to impersonate the requested user.(The account does not have permission to impersonate the requested user.)
The account does not have permission to impersonate the requested user.
RESOLUTION:
1. Grant ApplicationImpersonation rights via the Office 365 Portal:
2. Grant ApplicationImpersonation rights via PowerShell:
Note: It can take up to 48 hours for these new "ApplicationImpersonation" rights to take effect in Office 365.
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