how to Fix Microsoft Authenticator App Not Working on New Phone (Easy Fix) Having trouble with the Microsoft Authenticator app after switching to a new phone? This video provides a simple, step-by-step solution to fix the issue and regain access to your accounts quickly. In this video, you’ll learn: Common reasons why Microsoft Authenticator doesn’t work on a new phone. How to properly transfer your Authenticator account to a new device. Step-by-step instructions to restore access to your accounts. Tips to prevent future issues when changing phones. Perfect for users looking for a quick and easy fix to ensure their two-factor authentication is working seamlessly on a new phone!