Constant prompts for credentials from one Mac Outlook 2011 client

Posted by Top__Hat on Server Fault See other posts from Server Fault or by Top__Hat
Published on 2012-01-12T20:02:36Z Indexed on 2014/08/21 16:22 UTC
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Filed under:

macosx

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exchange-2010

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outlook-2010

The majority of my Exchange users are all on Windows 7 and have no issues (at least using Outlook...) but a subset of the executives are ardent Mac users running Outlook 2011 for OS X. One of these clients is prompted every 5-10 minutes for credentials. Ticking the checkbox to remember credentials does not fix the situation.

Mac version is 10.7.2.

I have already removed and rebuilt the EWS virtual directory on my Client Access server.

Outlook anywhere is set to NTLM authentication.

None of the Microsoft clients are experiencing this issue.

What else can I do to make this issue go away?

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