question

Hello @marcosmunhoz,

Thank you for reaching out to the Microsoft Q&A platform. Happy to answer your question.

Are you the only administrator or owner on your subscription? If yes, try directly via aka.ms/proofup, if that doesnt work either best open a support case with azure subscriptions team.

If there is another administrator, you can get your account status checked. The admin can,
1) Ensure that the sign-in isn't blocked.
2) Reset MFA via "Require Re-register MFA"

It could be that the account was blocked for sign-in

If you look at AzureAD -> Users -> "Marco User" and under 'Settings' where it says 'Block sign in' (which should be set to No) doesn't mean MFA block status. If the admin can check under AzureAD -> Security -> MFA -> Block/Unblock Users, they would see that if your account is blocked.

Hope this helps.

My account is the sole administrator of the Portal.
How do I open a support case with the azure subscription team since I can't access the Azure Portal?
I look forward to hearing from you.
And thank you very much for getting back to me.

Good evening.
I can't get access, because I only have my personal e-mail.
When trying to access by URL: https://mysignins.microsoft.com/security-info, return the message below: "You cannot log in here with a personal account. Use your corporate or student account".
E-mail: @outlook.com
I don't have an onmicrosoft.com e-mail address that I could access the account.
Can I create another Trial account and open a support case via this other Trial account email?

I look forward to hearing from you.

Thank you very much for your attention.

Good Morning.
I have already created a trial account and opened a ticket with support.
As soon as it is solved I will post the solution here.
Thank you very much for all your help.