Hi, my current Authenticator produces 8 digits OTP. How do I change to 6 digits instead?

Question

How to change from 8 digits to 6 digits OTP?

Answer 1

You'll have to remove the authenticator app from your sign-in methods and re-add it.

1. Go to https://mysignins.microsoft.com/security-info (business account) or https://account.live.com/proofs/manage/additional?mkt=en-US&refd=account.microsoft.com&refp=security (personal account)
2. Remove/Delete the existing Authenticator app
3. Click Add a new way to sign in or verify/Add sign-in method
4. Select Use an app/Authenticator app
5. Follow the prompts and instructions to add back the Authenticator app

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