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Outlook | Windows | Outlook Clássico para Windows | Para uso doméstico
Usando o Outlook Clássico no Windows para gerenciar e-mails pessoais, calendário e contatos
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Hi. I'm Brian and I'll try to help.
Since you are using two-factor authentication, it is essential that you keep a backup of the authenticator data so that you can transfer the secrets from the old authenticator to the new one if you ever need to transition to a new phone. It is also a good idea to have more than one method of receiving the code if you lose access to the authenticator. The extra method should be on a completely different mail system or it should be SMS, although Microsoft is phasing out SMS authentication. If you do not, then it's unlikely you'll be able to recover the account. That's the whole idea to two-factor authentication.