AADSTS16000 error blocking Microsoft for Startups LinkedIn verification and Azure signup

Question

Hello Microsoft Community,

I am trying to apply for Microsoft for Startups / Founders Hub and unlock Azure credits for my startup, but I am unable to complete the verification process.

When I click “Verify with LinkedIn”, nothing happens. The button does not redirect, open LinkedIn, or show any proper response.

I also tried creating/initializing an Azure free account with the same Microsoft account, but I received the following error:

Error: Selected user account does not exist in tenant “Microsoft Services” and cannot access the application e6694c91-1590-4e35-9bb7-b865c638b9c1 in that tenant. The account needs to be added as an external user in the tenant first. Please use a different account.

I also saw this authentication issue in the portal:

Experiencing authentication issues The portal is having issues getting an authentication token. Details: timed_out

Another detailed error shown was:

AADSTS16000: User account from identity provider live.com does not exist in tenant Microsoft Services and cannot access the application Microsoft_Azure_SupportPortalExtension in that tenant. The account needs to be added as an external user in the tenant first. Sign out and sign in again with a different Azure Active Directory user account.

Session ID: f02dad81340841c68ff42d9490a7d655 Trace ID: 67968765-fd4e-47ed-a831-6f21dde90300 Correlation ID: 0251facb-394d-4274-b60d-b14e2fa4a1a8 Timestamp: 2026-06-21 04:15:38Z Application: Microsoft_Azure_SupportPortalExtension Client ID: e6694c91-1590-4e35-9bb7-b865c638b9c1

I have already tried:

• Refreshing the page
• Using Microsoft Edge InPrivate mode
• Using desktop browser
• Using mobile browser
• Signing out and signing in again
• Logging into LinkedIn first
• Trying the Azure signup page separately

The issue still remains.

Can someone from Microsoft please help me understand how to fix this tenant/provisioning issue?

Do I need my Microsoft personal account to be added to a specific tenant, or does Microsoft need to reset/fix the Microsoft for Startups verification flow for my account?

Thank you.