What causes AADSTS76021?

Authentication configuration issue. Token validation failure

How do I fix AADSTS76021?

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:
AADSTS76021

What does this error mean?

The request sent by client is not signed while the application requires sign.

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 AADSTS76021 mean?

The request sent by client is not signed while the application requires sign

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.