How do I remove my registered Lumia from the Microsoft account?

Important: Using this will de-provision the phone from all Microsoft services, and require a hard reset before the phone can be used again.

To remove a registered device from your Microsoft account, please follow the steps below:

  1. Browse to and sign in with your Microsoft account email address. 
  2. Next to the phone you would like to remove, select Remove phone.
  3. Select the I'm ready to remove this device check box and confirm the action by clicking on Remove.  

The change to remove device association may take few hours to replicate through the systems.