Error 403 - Forbidden error when trying to login in to Microsoft Advertising Learning Lab

Hello Cynthia,

Thank you for reaching out to the Microsoft Advertising Learn Q&A Platform!

May I ask if you had tried the steps provided previously?

If error persists, you may reply to my private message for further assistance

You may also contact our support team at 1-800-518-5689 between Mon—Fri: 6 a.m. to 6 p.m. PT. Our English Chat Support is now open 24x7! for accurate response.

Kind regards,

John | Microsoft Advertising Support Specialist | 1-800-518-5689

The 403 Forbidden error indicates that access to the web app is being blocked, typically due to cached credentials, permission issues, or an account block.

Try the following steps in order:

1. Open a private/incognito browsing session and sign in again
   • In Microsoft Edge, use InPrivate mode.
   • In Google Chrome, use Incognito mode.
   • Then try to access Microsoft Advertising Learning Lab from there.
2. Clear browser cache if private mode works
   • If access is successful in private/incognito mode, clear the browser cache in the normal browser profile and then try again.
3. Sign out of all Microsoft accounts and clear site data
   • Sign out from all Microsoft accounts in the browser.
   • Clear all site data/cookies for Microsoft-related sites.
   • Close and reopen the browser and try to sign in again.
4. Contact the administrator or support if access is still blocked
   • If the error persists after clearing cache and cookies and trying private mode, the account or access may be blocked at the service side.
   • Contact the appropriate administrator or Microsoft support for the Microsoft Advertising Learning Lab to review and unblock access.

References:

• "403 Forbidden" error on OneDrive or SharePoint
• Can not access Azure - Microsoft Q&A