InvalidAuthenticationToken

Graph authentication token is invalid

Answer: Microsoft Graph could not accept the presented access token.

Resolution playbook

Fix it, then prove it

Use the error record as the starting point; use tenant evidence to confirm the actual cause.

A token for another API cannot be used with Microsoft Graph even if it was issued by Microsoft Entra ID.
The token is missing, expired, for the wrong audience, or contains the wrong delegated/application permission type.
Consent, Microsoft Entra role, licensing, resource ownership, or endpoint-specific authorization is still insufficient.

Acquire a fresh access token for Microsoft Graph.
Verify the token audience, tenant, expiry, and signature.
Ensure the Authorization header uses the Bearer scheme and contains only the token.

Acquire a new access token after permissions or consent change.
Confirm delegated permissions appear in scp or application permissions appear in roles, and that aud targets Microsoft Graph.
Repeat the exact HTTP method and endpoint and confirm the response no longer returns the same request ID/status.

The failure persists after the documented prerequisites and a new authentication/session attempt.
Multiple users, apps, devices, or networks show the same error, suggesting tenant policy or service scope.
You can provide the exact UTC time, tenant, application/resource, correlation or request ID, and sanitized logs.

Inspect the active Graph PowerShell context

Get-MgContext | Select-Object ClientId,TenantId,Account,AuthType,Scopes

Read-only. Confirms tenant, auth type, and delegated scopes. For app-only tokens, also inspect the token roles claim.

A token for another API cannot be used with Microsoft Graph even if it was issued by Microsoft Entra ID.