This guide is intended for all users having a YubiKey registered to their Microsoft account.
This document describes the steps to revoke the YubiKey as an authentication method from a Microsoft account.
Step 1: Go to your Microsoft account profile configuration page : https://aka.ms/mfasetup
Step 2: In the list of sign-in methods, identify the YubiKey you would like to remove from your account and then click on the “delete” link (in the case you have multiple YubiKeys associated to your account)
Step 3: In the pop-up message, confirm the deletion
Step 4: Confirm that the YubiKey you deleted is no longer in the list