I cannot access my portal.azure.com account, after change my phone and lose my MFA

Hello Eduardo Castro Puello,

If you're the only Global Administrator in the tenant, this qualifies as a tenant lockout scenario. In that case, we’ll need to involve Microsoft’s Data Protection team through a support ticket to help restore access.

To assist you further and forward this to Microsoft’s Data Protection Team, we need some additional information. As this involves Personally Identifiable Information (PII), please share the following details with us via private message only (do not post publicly):

• Contact phone number (including country code)
• Contact Email address
• Email address (affected account)
• Country
• Time zone
• Tenant domain name (e.g., contoso.onmicrosoft.com or verified custom domain)
• Tenant ID
• Azure subscription ID or billing information associated with the tenant (this helps confirm ownership)
• Locale

Once we receive this information, we will forward it to Microsoft’s Data Protection Team for further assistance.