Office 2011 for mac - Outlook. Setting up exchange account. Error -17997

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Installed Office 2011. Installation went fine. (Macbook Pro 13). Set up account in Outlook to connect to company exchange server (from inside the company firewall). Used automatic configuration. Connection succeeded. (yellow light then eventual blue light next to connection).

Can create a new mail message and even check the recipient name to validate (from exchange).

However, its not showing the new account on in the inbox section of the navigation pane (left pane). When attempting to send a new message an " unexpected error occurs" with a -17997

My coworker successfully connected and is working fine. Help.


Do NOT use that web site since no one there is of no help.

Diane Poremsky

Senior Member
Outlook version
Outlook 2016 32 bit
Email Account
Office 365 Exchange
Do NOT use that web site since no one there is of no help.

Unfortunately, you won't get much help from Windows Outlook users either. That error is not found on the Windows version and a different product team wrote Mac Outlook.


Chris Rand

I got the same issue. My problem turned out to be that I was missing an autodicover record on my DNS server. Once I added that record I got a couple more useful error messages that led me to realize my Exchange server would not accept the Username and Password authentication. I changed the authentication to Kerberos, waited for about 30 seconds and mail started to flow. Hope that helps.


Also have the error message 17997. Can´t connect with OL2011 to my Exchange Server 2010. With OL2010 under Windows everything is fine. Tried different ports, different authentications, different servernamens (with and without HTTP://) and also my OWA-Address. Also google can´t help...many entourage entries, but nothing helps. :-(

Also is without any help. :(


We got this same error/issue with a few MAC users at another facility who just upgraded to Office 2011. I have read elsewhere that this is due to Office 2011 can not connect to an Exchange 2003 server. Is this correct?


Right! Office 2011 can´t connect to Exchange/SBS 2003. You need Exchange Server 2007 or 2010.

I have already solved the problem. But don´t know what it was exactly.

Now I have Kerberos Authentication, full qualified server-name for Host of Exchange-Server. The automatic configuration doesn´t worked!

What I did was rebooting the Server. Maybe I had to wait a longer time after the right configuration. It need´s a while till the point turns from orange to green.

But the speed of OL2011 is not fast as OL2010 for Windows.
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