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Fix SharePoint OAuth 2.0 Audience URI Validation Errors

Adam Davis Oct 21, 2026 868 views

Question details

A developer or administrator needs to resolve an AudienceUriValidationFailedException that occurs when making a SharePoint Online API call with an OAuth 2.0 token.

How to Fix SharePoint OAuth 2.0 Audience URI Validation Errors

Product: SharePoint Online
Device & OS: not provided
Scenario: Attempting to authenticate and execute API calls to SharePoint Online using an OAuth 2.0 access token.
Observed behavior: The API call fails and returns an AudienceUriValidationFailedException because the token has an incorrect audience or resource configuration.

Before you start

Ensure you have access to the Microsoft Entra ID (Azure AD) admin center, and keep your registered application's client ID and target SharePoint resource URLs readily available.

Solution 1Recommended

Verify OAuth 2.0 Token Audience and App Permissions

Use this solution to ensure that the access token requested specifically matches the exact SharePoint resource URL and that the correct API permissions are granted.

The most frequent cause of the AudienceUriValidationFailedException is a mismatch between the 'aud' (audience) claim in your OAuth 2.0 access token and the SharePoint resource URL you are attempting to access.

Decode and inspect the access token

Use a secure JSON Web Token (JWT) decoder tool to inspect your access token. Check the 'aud' claim to ensure it exactly matches your SharePoint tenant URL (e.g., https://yourtenant.sharepoint.com).

Check application permissions in Azure AD

Navigate to the Microsoft Entra ID portal, go to 'App registrations', and select your application. Click on 'API permissions' to verify that the necessary SharePoint permissions have been added and admin consent is granted.

Verify the authentication flow requests

Ensure your application is utilizing the correct OAuth 2.0 authorization-code flow. Verify that your code passes the correct 'resource' or 'scope' parameter when requesting the token from the Microsoft identity platform.

Verify OAuth 2.0 Token Audience and App Permissions

Resource Scope Limitation: Tokens generated specifically for Microsoft Graph APIs cannot be reused to call native SharePoint REST APIs directly. You must request a token securely scoped to the SharePoint resource.

Solution 2

Seek Specialized Azure Identity Support

Use this solution if verifying your token claims and Entra ID application permissions does not resolve the audience validation error.

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Frequently Asked Questions

What triggers the AudienceUriValidationFailedException in SharePoint Online?

This exception triggers when the SharePoint API validates an incoming OAuth 2.0 token and finds that the intended audience ('aud' claim) in the token does not match the actual SharePoint resource URL being requested by the client.

Can I use a Microsoft Graph API token to access SharePoint REST APIs?

No. Access tokens are strictly bound to the requested resource. A token issued for Microsoft Graph will fail with an audience validation error if you attempt to use it against a native SharePoint Online REST API endpoint.

How do I safely inspect my OAuth 2.0 access token claims?

You can inspect the contents of your JSON Web Token (JWT) by pasting it into secure decoding tools like jwt.ms. Always ensure you sanitize or redact sensitive values and never share your complete tokens or secret keys in public forums.

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