From our Activating NVivo Help Page :


Reactivate NVivo to use a new license

Follow these instructions in order to deactivate a current NVivo license and reactivate to use a new license.

1. Make sure that you are connected to the internet.
2. Close any NVivo projects you have open.
3. Click the File tab, Product Info, Manage License and then Deactivate License.
4. Confirm deactivation, and close NVivo.

5. Restart NVivo.

   Most likely you are still logged in with the profile you were logged in with before deactivition.

   • If the license you want to use is in an account you have access to under this profile, continue below to activate.
   • If the license you want to use belongs to an account under another profile, log out of myNVivo, start NVivo again and log in with the profile you want to use.

6. In the dropdown, select the account with the license that you want to use and click Activate. (If you have logged in with a new profile there may not be a choice of accounts—in this case just click Activate.)

   Activation is automatic.