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Mailbox

Articles about migration errors when performing an Exchange Online/Microsoft 365 Mailbox migration.

  • 404 Not Found
  • Active Directory is unavailable. Try again later.
  • Discovery services did not return a valid Exchange Web Service URL
  • Error - Microsoft 365 to Microsoft 365 with Coexistence - The operation has timed out
  • Error - Outlook Client connects to Microsoft 365 before cutover
  • Error: Service endpoint not found
  • Internal Server Transient Error
  • Microsoft 365 User Names Error
  • MigrationWiz Error - The account does not have permission to impersonate the requested user
  • No Associated Mailbox SMTP Error
  • No mailbox with such GUID - ErrorNonExistentMailbox
  • Request to 'autodiscover-s.outlook.com' failed - MigrationWiz Error
  • Server Cannot Service This Account
  • Token Serialization Denied - Error
  • Unable to connect to the remote server
  • Updating Calendar Events Post-Migration

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