Cannot contact Microsoft for Startups support — AADSTS16000 blocks ticket submission

Title: Cannot contact Microsoft for Startups support — AADSTS16000 blocks ticket submission

I’m trying to contact Microsoft for Startups about application eligibility, but the support route redirects me to Azure and fails before I can submit a ticket.

The error says:

AADSTS16000: User account from identity provider 'live.com' does not exist in tenant 'Microsoft Services' and cannot access the application 'Microsoft_Azure_SupportPortalExtension'.

I therefore cannot follow the instruction to submit a support ticket through the portal.

Is there an alternative support email address or a contact form that does not require access to the failing Azure support application? If this requires an account-access correction, please tell me how to contact the appropriate team privately.

Error timestamp: 2026-10-10 17:48:57Z

I can provide the correlation ID, trace ID, and screenshots through a private support channel.

Please do not direct me back to the same Azure ticket form without a workaround, because that is the component rejecting my account.