Add Microsoft Authenticator to an existing account

Step 1

Head to https://mysignins.microsoft.com/security-info

Step 2

On the Security Info page, click 'Add sign-in method', and then 'Microsoft Authenticator'

Step 3

Download the Microsoft Authenticator For iOS iPhone and Android: https://kb.southstatetech.com/...

Step 4

Scan the QR code with the Microsoft Authenticator   On the Authenticator App:  

Step 5

Use the Authenticator app to verify your account