How to resolve 'Admin consent required' errors when signing into third-party apps with Microsoft 365

Summary

This guide helps you troubleshoot and resolve: How to resolve 'Admin consent required' errors when signing into third-party apps with Microsoft 365. Follow the steps below to fix the issue.

Common Causes

This error occurs when a third-party application requests access to your Microsoft 365 data, such as email, calendar, or contacts, but your organisation’s security settings require a global administrator to approve the connection first. Until an administrator grants consent, you will be unable to sign in or connect the application to your account.

Quick Fix Steps

1. Copy the error message or take a screenshot of the “Admin consent required” page.
2. Note the name of the application you are trying to connect.
3. Ask your organisation’s Microsoft 365 administrator to review and grant consent for the application.
4. Once approved, attempt to sign in to the application again.

Detailed Instructions

For End Users

If you see an “Admin consent required” error, you cannot approve the permission yourself. Follow these steps:

1. When the error appears, select Cancel or close the sign-in window.
2. Record the name of the third-party app and the specific permissions it is requesting.
3. Contact your internal IT manager or your organisation’s designated Microsoft 365 administrator.
4. Provide them with the application name and the error details so they can locate the request in the Microsoft Entra admin centre.
5. Wait for confirmation that consent has been granted, then try signing into the app again.

For Microsoft 365 Administrators

If you are the global administrator for your organisation, you can grant consent through the Microsoft Entra admin centre:

1. Sign in to the Microsoft Entra admin centre using your administrator account.
2. In the left-hand menu, select Identity, then choose Applications.
3. Select Enterprise applications.
4. Search for the application by name in the list.
5. Select the application to open its overview page.
6. In the left menu, select Permissions.
7. Locate the permission request marked as Requires admin consent.
8. Select Grant admin consent for [Organisation Name].
9. Confirm the action when prompted.

Troubleshooting

Consent still not working after administrator approval

• Sign out of all Microsoft 365 services and sign back in to refresh your authentication token.
• Clear your browser cache and cookies, then attempt the sign-in again.
• Try signing in using an InPrivate or Incognito browser window.
• Ensure the administrator granted consent for the correct application and the correct permissions.

You are not the administrator

• You cannot bypass this error yourself. Contact your organisation’s IT support or Microsoft 365 administrator.
• If your organisation uses a managed service provider for Microsoft 365 management, you can open a ticket with them to assist with reviewing the consent request.

Still Having Issues?