Information, Technology & Consulting

Active Directory Name Change


Dartmouth is making two changes to account information in every active directory person record: we are changing the "user principal name" (UPN) from "[email protected]" to "[email protected]", and we are changing the SIP address from "[email protected]" to the full SMTP address (e.g. [email protected]). These two pieces of information in an active directory account are used by many systems to validate user names.

Due to this, when these changes are made, existing users may experience the following issues:

  1. If they are a Skype\Lync user, if they are in Skype\Lync at the time of the change, they will be logged out of the application. Before being able to log back in, or to log in after the change has been made, they will need to adjust their Skype settings following the steps below.
  2. If they are a Skype/Lync user, and have created Skype meetings, those meetings will need to be recreated after their account name is changed. This is due to the original meeting being tied to their former account name.
  3. If they are using OneDrive, you may have issues until a cookie is deleted. Follow the steps below to delete that cookie.

Changing Your Skype\Lync Name

Skype or Lync for Windows:

  1. Open the Skype application.
  2. Click the gear icon found in the upper right corner of the Skype window.
  3. From the menu that appears, click Personal.
  4. Change the Sign-in Address to be your full Dartmouth email address (e.g. [email protected]).
  5. Click OK then exit Skype and restart it.

Skype or Lync for Macintosh:

  1. Open the Skype application. 
  2. When prompted, change the Sign-in Address to be your full Dartmouth email address (e.g. [email protected]).
  3. Enter your password and click Sign In.

Deleting Your Cookie

Some web browser may have saved a "cookie" with your previous UPN name in them. This cookie will need to be deleted before the web-based application (e.g. syncing with OneDrive) will work again. See for information on how to delete cookies from your browser. 


If you continue to have issues logging into systems, restart your devices. If you continue to have issues after restarting, contact your department's IT support office.



Email, Communication and Collaboration
Last updated: 
Wednesday, October 12, 2016

If you have questions or need further information, contact your department's IT support office, or contact the IT Service Desk via email at [email protected], via phone at 603-646-2999 or walk in to see them in Baker/Berry 178J.

Information, Technology & Consulting