In Exchange 2010 you might need to reconnect a mailbox to a user account.

Exchange Error1

The process to do this is rather simple. Open up the Exchange Management Console (EMC)

  • Step 1 -> Expand Recipient Configuration and then click on Disconnected Mailbox.
  • Step 2 -> Find the user account and then right click on that account and click Connect.Exchange Error2
  • The wizard as shown above will start. Click Next and go through the selection.
  • Once you click the finish button the error below appears:

Exchange Error

  • Even though we could see the user in the EMC the error above occurs.


  • Open up the EMS and run the following command: Clean-MailboxDatabase “Name” and press enter.
  • Now try reconnecting the mailbox again.

Exchange Error3


Hope it helps.