I've got an odd problem whilst trying to configure a corporate (in-house, non-Office 365) Exchange mailbox with the Outlook for Mac 2011 client (latest update applied) on a Mac computer running OSX Yosemite 10.10.4.

When I go through the process of adding the Exchange account with the email address, Method (User Name & Password), User Name (Domain\User ID), and password I see the warning below:

Outlook for Mac cannot add this type of account. To access your email, open your browser, sign in to Office365 and use the Outlook Web App.

This is an in-house Exchange system so I'm not sure why it's thinking it's an Office 365 account unless this is just a generic message. I can login using the same address and password via Outlook Web App so I'm confident the password is correct.

What's odd is that I have successfully set up two or three other Exchange accounts from the same system on this client with no such problem. It only seems to be a problem with this one Exchange account. There was a special character (#) at the end of the user's password but we got them to change it, making sure there are no special characters.

Any ideas what could be causing this problem?

Thanks

I've got an odd problem whilst trying to configure a corporate (in-house, non-Office 365) Exchange mailbox with the Outlook for Mac 2011 client (latest update applied) on a Mac computer running OSX Yosemite 10.10.4.

When I go through the process of adding the Exchange account with the email address, Method (User Name & Password), User Name (Domain\User ID), and password I see the warning below:

Outlook for Mac cannot add this type of account. To access your email, open your browser, sign in to Office365 and use the Outlook Web App.

This is an in-house Exchange system so I'm not sure why it's thinking it's an Office 365 account unless this is just a generic message. I can login using the same address and password via Outlook Web App so I'm confident the password is correct.

What's odd is that I have successfully set up two or three other Exchange accounts from the same system on this client with no such problem. It only seems to be a problem with this one Exchange account. There was a special character (#) at the end of the user's password but we got them to change it, making sure there are no special characters.

Any ideas what could be causing this problem?

Thanks

Outlook 2011 on Mac uses EWS to access the mailbox.  start with looking at the EWS settings with Get-CasMailbox and compare working vs nonworking.

Hi,

I have noticed you have created 2 accounts successfully.

Please refer to hinte's response to check the ews settings to find the difference.

If it doesn't work, I suggest we can recreate a new account to check if the issue persists.

Regards,

David