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Title
Migration to Office 365 fails with “The parameters passed to the cmdlet represent a managed account… -
Description
DMA log reports the following:
Target object creation failed: The parameters passed to the cmdlet represent a managed account, which doesn't match the namespace state, which is federated.
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Resolution
Usually this happens because the target domain has been set up as federated.
As workaround create the domain as standard, not federated. Or try to disable (temporarily) Single Sign-on during migration.
The Convert-MsolDomainToStandard cmdlet converts the specified domain from single sign-on (identity federation) back to standard authentication.
Important! In most cases administrators don't need DMA to provision objects. It is recommended to do it with native MS DirSync and then use DMA, just to match users and set mail redirection.
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Additional Information
This appears to be a known limitation for Office 365. Please see the following references from the Office 365 forums: Error when Migrating mailboxes http://community.office365.com/en-us/forums/148/p/30876/128635.aspx Error during cut-over migration http://community.office365.com/en-us/forums/158/p/59193/217826.aspx