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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I had previously added my LinkedIn authentication in my Microsoft authenticator, but my previous phone burned and I don't have access to it, and I sign in with my microsoft id on the new phone, but unfortunately my LinkedIn authentication is not there.
You will need to contact their support teams
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Regards
Abiola