What to Do If You See Office 365 Migration Recipient Not Found Error?

General
1

To Resolve error: recipient not found permanent exception:

  1. Check if ExchangeGUID is unset:
    Get-RemoteMailbox $RemoteAlias | Format-List ExchangeGUID (Zeros = unset)

  2. Get ExchangeGUID from cloud mailbox:
    Get-Mailbox $CloudMailbox | Format-List ExchangeGUID

  3. Set ExchangeGUID on remote mailbox:
    Set-RemoteMailbox $RemoteMailbox -ExchangeGUID $GUID

  • Example: Set-RemoteMailbox $RemoteMailbox -ExchangeGUID “jfuj90i9b-4e95-49b5-9736-14fgfg”
  1. Force directory sync.