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"Access Denied" error, or user is repeatedly prompted for credentials when trying to connect to Office 365 by using a rich client application

PROBLEM
When users try to access a Microsoft Office 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 following error message:
    Access Denied
SOLUTION
To fix this problem, reset the user's password. To do this, follow these steps:
  1. Open a web browser, browse to the Office 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 Office 365 password for the user. Make sure that the password meets the criteria for Office 365.
REFERENCES
For information about related issues, see the following Microsoft Knowledge Base articles: 
  • 2637629 How to troubleshoot non-browser apps that can’t sign in to Office 365, Azure, or Intune 
  • 2461628 A federated user is repeatedly prompted for credentials during sign-in to Office 365, Azure, or Intune  
Still need help? Go to the Office 365 Community website.
Properties

Article ID: 2630976 - Last Review: 10/27/2014 10:03:00 - Revision: 31.0

Microsoft Office 365, Office 365 User and Domain Management

  • o365 o365e o365p o365022013 o365m o365a KB2630976
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