Outlook for Mac 2011 doesn't connect to Exchange Online

Applies to: Exchange Online


When you use Microsoft Outlook 2011 for Mac to connect to your Microsoft Exchange Online account in Microsoft Office 365, your email server settings aren't automatically set up for Exchange Online. So, you try to manually set up Outlook 2011 for Mac to connect to Exchange Online by using the steps in the following Microsoft Knowledge Base article:
2459968 Outlook 2011 for Mac doesn't automatically set up your email server settings for Exchange Online in Office 365
However, setup fails, and you can't access your Exchange Online account by using Outlook 2011 for Mac.


This problem occurs if Microsoft Exchange Web Services (EWS) is turned off in Exchange Online.


To fix this issue, enable EWS in Exchange Online. To do this, follow these steps:
  1. Connect to Exchange Online by using remote PowerShell. For info about how to do this, go to the following Microsoft website:
  2. Enable EWS in Exchange Online. To do this, run one of the following cmdlets, as appropriate for your situation:
    • For a single user
      Set-CASMailbox -EwsAllowOutlook $true –Identity "ONLINE USERNAME" 
    • For the whole organization
      Get-Mailbox | Set-CASMailbox -EwsAllowOutlook $true 


EWS includes the following web services:
  • Autodiscover
  • Availability
  • Messaging records management
  • Notification
  • Synchronization
  • Exchange data service
Still need help? Go to Microsoft Community.