Account can't be validated in Outlook 2013

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nticompass
Posts: 5
Joined: Tue Feb 07, 2017 6:12 am

Account can't be validated in Outlook 2013

Postby nticompass » Wed Oct 18, 2017 3:09 pm

One of our clients is telling me that he cannot get his email via Outlook 2013. He says it shows "account can't be validated."

I do not have Outlook, so the only way I can think to test this is via https://testconnectivity.microsoft.com

When I tried it, I get an error:
Testing HTTP Authentication Methods for URL https://mail.example.com/Microsoft-Server-ActiveSync/.
The HTTP authentication test failed.

Code: Select all

A 401 error was received from the server, but no authentication methods are supported.
HTTP Response Headers:
Connection: keep-alive
Public: OPTIONS, POST
Allow: OPTIONS, POST
Content-Length: 0
Date: Wed, 18 Oct 2017 15:02:28 GMT
Server: nginx
WWW-Authenticate: BASIC realm="Zimbra"
Elapsed Time: 768 ms.


How can debug and fix this issue? Is it related to the fact that autodiscover (incorrectly) thinks it's on port 8443?


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