A Microsoft app for iOS and Android devices that enables authentication with two-factor verification, phone sign-in, and code generation
If the sign-in is asking for Microsoft Authenticator for the second account and that app is no longer available for that account, use another verification method that is already on the account.
- On the sign-in screen, choose another method if it is offered.
- If email or phone is available, use that instead of Authenticator.
- If the account says I don’t have any of these, select it to replace the security info.
If the verification code is being sent to another Microsoft email account such as @outlook.com, @hotmail.com, @live.com, or @msn.com, use two private browsing windows so both accounts stay signed in at the same time:
- In a private/InPrivate window, sign in to the account that is asking for the code.
- Leave that window open when it prompts for the code.
- Open a second private/InPrivate window.
- Sign in to the alternate email account that receives the code.
- Copy the code from that message and enter it in the first window.
If no codes are arriving:
- Check Junk/Spam for messages from @accountprotection.microsoft.com.
- Do not make repeated code requests, because that can temporarily block code delivery.
- If the phone blocks texts from unknown numbers, change that setting and request a new code.
- VOIP numbers cannot be used for sign-in verification codes; a mobile number is required.
- If the account was flagged for unusual activity or locked for security reasons, verification messages might not go through until the issue is resolved.
If access is restored, add another sign-in method so the account is not dependent on one app:
- Go to the Microsoft account Security page.
- Select Manage how I sign in.
- Select Add a new way to sign in or verify.
Microsoft support agents cannot send verification codes or change account details for this scenario. If sign-in still fails, use the Sign-in helper or Contact Support options listed in the Microsoft support guidance.
References:
- Troubleshoot Microsoft verification code issues
- Microsoft account security info & verification codes
- Can’t use Microsoft authentication - Microsoft Q&A Microsoft Authenticator wants me to re log into my accounts as I have got a new phone. However when I put in my password it asks me to verify a code on Microsoft authentication which I cannot do since it is not logged into those accounts. Then it asks me to use a code on my outlook app, but to login to my outlook app I need to verify a code on Microsoft Authenticator. Please help me fix this