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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Hey
theres probably not much i can do but maybe someone has a solution. So my old ass phone decided do uninstall my authetificator app for some reason (happend with other apps too) and i didn't have cloud save activated. Now obviously all my settings are gone and i don't know how to recover everything.
I'm afraid that if you got no backup lying somewhere from phone nor app, there isn't much you can do but re-authorizing the (newly installed) app for accounts.