What causes AADSTS90051?

Authentication configuration issue. Token validation failure

How do I fix AADSTS90051?

Step 1: Check the Azure AD error lookup at login.microsoftonline.com/error for this code. Step 2: Review your application's authentication configuration in Azure portal. Step 3: Contact your Azure AD administrator if the issue persists

Low severityauthentication

Power BI Refresh Error:
AADSTS90051

What does this error mean?

The national cloud identifier.

Common causes

1Authentication configuration issue
2Token validation failure

How to fix it

1Step 1: Check the Azure AD error lookup at login.microsoftonline.com/error for this code
2Step 2: Review your application's authentication configuration in Azure portal
3Step 3: Contact your Azure AD administrator if the issue persists

Frequently asked questions

What does AADSTS90051 mean?

The national cloud identifier

How do I fix this error?

Check your application registration, token configuration, and user permissions in the Azure portal. Review Conditional Access policies if the error is policy-related.