Sign-in & Login Problems

How to Fix Invalid Client Error for Microsoft 365 GPM Terms of Use

Maira Mehtab Sep 22, 2026 869 views

Question details

The user receives a message stating that Microsoft cannot connect to the organization's GPM Terms of Use URL, resulting in an authentication failure.

Product: Microsoft 365 / Microsoft Intune
Device & OS: not provided
Scenario: Signing into a Microsoft 365 account managed by an organization's identity management system.
Observed behavior: Authentication fails immediately with an 'invalid_client' error code indicating a connection failure to the GPM Terms of Use URL.

Before you start

Since this error is tied to organizational identity settings and mobile device management, ensure you have the contact information for your company's IT administrator before proceeding.

Solution 1Recommended

Contact Your IT Administrator or Microsoft Q&A

This is an organizational identity and Intune configuration issue that cannot be resolved by standard end-users. It requires administrative intervention.

The 'invalid_client' error tied to the GPM Terms of Use typically occurs when there is a misconfiguration in Microsoft Intune or Microsoft Entra ID (formerly Azure AD). Standard users do not have the required permissions to bypass or fix organizational policies.

Report to IT Support

Take a screenshot of the 'invalid_client' error message and email it to your organization's IT department, noting that it happens during the GPM Terms of Use check.

Verify Intune Configurations (For Admins)

If you are an administrator, log into the Microsoft Intune admin center. Check the Tenant Administration settings and verify that the Terms of Use URLs are correctly formatted and accessible.

Consult Microsoft Q&A

If the issue persists, visit the Microsoft Q&A portal and post your specific tenant configuration details in the Microsoft Intune section at https://learn.microsoft.com/en-us/answers/tags/415/intune.

Admin Access Required: Only users with Global Administrator or Intune Administrator roles can modify the identity-management settings causing this authentication block.

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Frequently Asked Questions

What does the 'invalid_client' error mean in Microsoft 365?

The 'invalid_client' error indicates that the authentication request was rejected by the server. In the context of Microsoft 365 and Intune, it usually means the client application isn't recognized or there is a configuration error in the organization's Azure AD or Terms of Use setup.

Can I bypass the GPM Terms of Use error as a standard user?

No. The GPM Terms of Use are enforced by your organization's compliance and identity management policies. You must contact your IT administrator to adjust the Microsoft Intune settings.

Where can IT administrators get advanced support for Microsoft Intune issues?

IT professionals managing Microsoft 365 environments can find dedicated technical support and community advice by posting their questions in the Microsoft Intune section of the official Microsoft Q&A forums.

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