No mailbox with such GUID - ErrorNonExistentMailbox

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    Migration Wiz

    I have this error and don't have a 365 site only on-prem so this is of no help

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    Kyle Rinner

    Sorry, it does not help with your environment. The error probably means the same thing for your On-prem environment.  Either the user does not have a mailbox created or the administrator does not have access to see the user's mailbox.  If you are not able to resolve the issue please open a ticket so we can look into the issue further. Contact Support

    Regards,
    Kyle

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