Rename/Update a MS Active Directory Username

If you live in a world with a wonderful piece of software which forces you to stick to usernames no longer than 12 characters long, then you may need to recreate user accounts to adhere to these naming structures.  But what if the account is already in full use by the user?

Have no fear, the steps below are tried and tested and work perfectly.

Please note, these steps only cover accounts that are MS Active Directory accounts with MS Exchange mailboxes.

If you are using the likes of Citrix or home folder shares etc you will need additional steps.  I will be creating another post HERE for the full run-down on the steps required for an AD, mail-enabled account on a Citrix environment with home shares.  Take a look at this post also as it may be more suited to your setup!
  1. Open Active Directory Users and Computers
  2. Navigate to the Employees Organizational Unit (OU)
  3. Right-click on the name of the employee for the name change and select Rename
  4. Rename the employee
    • You MUST change the name slightly to make the dialog box prompt so even put a space after the name and press return
  5. Rename User dialog box appears
    - Full Name should be correct
    - First Name should be correct
    - Last Name should be changed to the new Last Name
    - Display Name will changed in the above step
    - User Logon Name should be changed to the new Last Name
    - User Logon name (pre-Windows 2000) will be changed in the above step
  6. Open Exchange Management Console
  7. Under Recipient Configuration click on Mailbox to view all user mailboxes
  8. Right click the employee name and select Properties
  9. In the General Tab
    - Change the Alias to match username changed in Active Directory Users and computers
    - Click Apply button
  10. In the E-Mail Addresses Tab
    - SMTP address with the new name should be bold
    - Highlight the old address, right click and select remove
    - Click Apply Button, then OK
  11. Update the Offline Address Book, navigate to Organization Configuration and select Mailbox
  12. Select the Offline Address Book Tab
  13. Right click on the Default Offline Address Book select Update
  14. Click Yes in the dialog box

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