Outlook 2011 will not accept Exchange credentials

Posted on 2014-12-08
Medium Priority
Last Modified: 2014-12-13
I have a problem with one of our Macs using Outlook 2011. When I try to add an exchange account it picks up the CNAME record and pulls down the settings for the account but keeps saying "Mail could not be received at this time" Logon failure unknown user or bad password, Your username/password or security settings may be incorrect.

I can log in to OWA with the same credentials just fine and add the account elsewhere without a problem it just fails on this Mac


Mac OSX Yosemite 10.10.1
Outlook 2011
Microsoft Exchange 2013

Any help would be most appreciated.

I have tried:

Using keychain first aid
Uninstalling and reinstalling Office 2011
Resetting users password to a different password
Question by:purpleoak
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 5
  • 2
LVL 22

Expert Comment

by:David Atkin
ID: 40486469
Have you tried defining the domain with the username?


Can you give us a screen shot of your Outlook Anywhere settings?

Author Comment

ID: 40486519
We have tried DOMAIN\USERNAME instead of e-mail address but still get the same error message.
LVL 22

Expert Comment

by:David Atkin
ID: 40486606
It will want to be the persons username and password, not the email address - In most cases anyway.

Can you tell us what settings are in Outlook Anywhere please?

Try changing the proxy authentication settings to 'basic authentication'
Ransomware-A Revenue Bonanza for Service Providers

Ransomware – malware that gets on your customers’ computers, encrypts their data, and extorts a hefty ransom for the decryption keys – is a surging new threat.  The purpose of this eBook is to educate the reader about ransomware attacks.


Author Comment

ID: 40486637
server settings
Delegates settings
Security settings

Expert Comment

ID: 40486951
In IIS on your CAS server(s), can you check your EWS directory's authentication settings and make sure you have Basic auth selected. If not then select it and apply. Then do an 'iisreset /noforce' on you CAS server(s). If the '/noforce' option doesn't it work take it out and try again. Then launch Outlook on your MAC again.

Author Comment

ID: 40487083
Does not seem to have made a difference, One thing to add which I have just discovered is that the SSL certificate for the domain on this server was renewed last Wednesday and updated on the server using the same provider and type of certificate as before.

Accepted Solution

purpleoak earned 0 total points
ID: 40487186
Problem solved by completely removing Office 2011 and all associated licenses and files and then reinstalling Office 2011 and installing all available updates.

Author Closing Comment

ID: 40497779
This solution solved our problem

Featured Post

Office 365 Training for IT Pros

Learn how to provision tenants, synchronize on-premise Active Directory, implement Single Sign-On, customize Office deployment, and protect your organization with eDiscovery and DLP policies.  Only from Platform Scholar.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article will help to fix the below errors for MS Exchange Server 2013 I. Certificate error "name on the security certificate is invalid or does not match the name of the site" II. Out of Office not working III. Make Internal URLs and Externa…
This article shows how to use a free utility called 'Parkdale' to easily test the performance and benchmark any Hard Drive(s) installed in your computer. We also look at RAM Disks and their speed comparisons.
The basic steps you have just learned will be implemented in this video. The basic steps are shown to configure an Exchange DAG in a live working Exchange Server Environment and manage the same (Exchange Server 2010 Software is used in a Windows Ser…
Many of my clients call in with monstrous Gmail overloading issues with Outlook. A quick tip is to turn off the All Mail and Important folders from synching. Here is a quick video I made to show you how to turn off these and other folders in Gmail s…
Suggested Courses
Course of the Month13 days, 19 hours left to enroll

801 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question