Wrong phone number in Authenticator

Bing 1 Reputation point

I used my iPhone in 2 countries: China and USA by simply switching SIM card around. My Chinese phone number was registered in my Authenticator app. I came back to USA before Pandemic, and was not able to go to China for 3 years and my Chinese phone number was expired. Now I am not able to access my security or update my password due to two way authentication that requires code that would be sent to my lost Chinese phone number. How do I fix this issue?

Microsoft Authenticator
Microsoft Authenticator
A Microsoft app for iOS and Android devices that enables authentication with two-factor verification, phone sign-in, and code generation.
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  1. Dave Patrick 426.3K Reputation points MVP

    Maybe this one helps.

    --please don't forget to upvote and Accept as answer if the reply is helpful--

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  2. Bing 1 Reputation point

    Thank you Patrick for your answer. I forgot to mention one more thing, I don't know when it happened, but my Authenticator now is my work email account not my personal account. But if I add personal account, it asks me to verify myself with texting code to my old phone number, hence the dead cycle