WISC - Office 365 University Inactivation
This describes how to deactivate an Office 365 University installation. You would want to do this if you were no longer going to be using Office 365 on one of your computers due to replacement or sale, for example. Deactivating an installation will make one available for use on a different computer.
1. Log in to your Microsoft account at http://www.office.com/myaccount2. On the resulting page, click "Deactivate" next to the installation you want to deactivate.
3. A confirmation window will appear:
Click "OK" if you really want to deactivate the installation.
4. The confirmation window will go away and the installation will disappear from your list of activated installations.