aka.ms/authapp explained
aka.ms/authapp points to the download for Microsoft Authenticator, the free app that approves your sign-ins and generates verification codes.
- Open aka.ms/authapp on your phone; it takes you to the official app listing.
- Install Microsoft Authenticator from your phone's app store.
- Add your account by signing in or scanning the QR code Microsoft shows during setup.
- Approve sign-ins with a tap, or use the 6-digit codes it generates.
What the app is for
Instead of typing a password alone, two-step verification asks for a second proof that it is really you. The Authenticator app provides that proof — a tap or a short code — which makes your account much harder to break into.
Frequently asked questions
Is Microsoft Authenticator free?
Yes. It is a free app from Microsoft, available for Android and iPhone.
Do I have to use the app?
No, but it is one of the most secure options. You can also receive codes by text or email, set in your account security settings.