Processos no Microsoft 365 para configurar aplicativos do Office, resgatar chaves de produto e ativar licenças.
Hi Vinicius,
Good day and welcome to the community. If you are an end user in your school, you could ask your administrator to sign in to the admin center > Users > Active user > to manage your MFA settings.If you are the only admin of your organization and have completely locked out of the admin center, the only option left would be open a Microsoft Support Case.
You can find the Support Phone Numbers here:https://support.microsoft.com/en-us/topic/customer-service-phone-numbers-c0389ade-5640-e588-8b0e-28de8afeb3f2If you still cannot reach an agent through the link above, there is still a workaround, you can create a new business account with free trial to allow yourself raise a support ticket, there you could provide your current account details. Ask the agent to escalate this issue for a temporary login.
I hope this can help!
Best regards,
Hoang-D - MSFT | Microsoft Community Support Specialist