A Microsoft app for iOS and Android devices that enables authentication with two-factor verification, phone sign-in, and code generation
Microsoft** regional Customer Service by **phone
This is the strongest official route. When the IVR or agent tells you to create a portal ticket, don't describe it simply as an MFA problem. Say:
"I cannot create an Azure portal support request because I am the only Global Administrator of the Microsoft Entra tenant and I have lost the only registered MFA method. I need a support case created for a sole** Global Administrator tenant lockout / tenant **recovery. I need the case routed for ownership verification."
Microsoft's Azure documentation specifically directs customers who cannot** access the Azure **portal to regional customer service