"Access Denied", or user is repeatedly prompted for credentials when connecting to Microsoft 365

• Applies to:

  Microsoft 365

Problem

When users try to access a Microsoft 365 resource from a rich client application such as Microsoft Outlook or Microsoft Lync, one of the following symptoms occurs:

• Users are repeatedly prompted to enter their credentials.
• Users receive the Access Denied error.

Solution

Tip

To diagnose and automatically fix several common Office sign-in issues, you can download and run the Microsoft Support and Recovery Assistant.

To fix this problem, reset the user's password. To do this, follow these steps:

1. Open a web browser, browse to the Microsoft 365 portal (https://portal.office.com), and then sign in by using the user's expired credentials.
2. When you're prompted, enter a new Microsoft 365 password for the user. Make sure that the password meets the criteria for Microsoft 365.

References

For information about related issues, see the following articles:

• How to troubleshoot non-browser apps that can't sign in to Microsoft 365, Azure, or Intune
• A federated user is repeatedly prompted for credentials during sign-in to Microsoft 365, Azure, or Intune

Still need help? Go to Microsoft Community.