If you are a Lumia 520 owner and have lost your Microsoft account password, then you can easily delete it by following these simple steps:

  1. Open the Lumia 520’s Settings app and tap on the Accounts button.
  2. Scroll down to the bottom and select “Delete Microsoft account.”
  3. Tap on the “Delete” button and confirm your deletion by tapping on the “Confirm” button.
  4. The Microsoft account will be deleted from your Lumia 520 and you will need to re-enter your password if you want to continue using the device.