Outlook anywhere

When I try to connect Outlook with RPC over HTTP, Outlook Anywhere, I get certificate errors.

With https://www.testexchangeconnectivity.com I did a test RPC/HTTP connectivity and I got the following error:
     The certificate chain couldn't be built. You may be missing required intermediate certificates.

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howartConnect With a Mentor Author Commented:
Ok found on the web page of my certificate provider "Xolphin" the how to for exchange 2007.
The root cert and intermediate cert of Thawte were missing.

The instructions in Dutch can be found at:

The root and intermediate cert had to be downloaded and installed
Again in Dutch:
screen shots are of English certificate manager.

https://www.testexchangeconnectivity.com passes now all tests

Matt CoughlinCommented:
Do you have a CA in your network that you are using for the certificates or are you using Exchange's self-signed one?
Check the Canonical Name of owa, I mean it should be as DC=com,DC=domain,CN=owa.company.com
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howartAuthor Commented:
I use one of Thawte
Jeff BeckhamEngineerCommented:
Verify that the Thawte chain is available on your Exchange server.
Jeff BeckhamEngineerCommented:
That's good to hear.  You can now also connect Outlook using Outlook Anywhere/RPCoHTTP?
howartAuthor Commented:
Yep did a test at home and that worked too.

howartAuthor Commented:
This is the solution I found myself.
The other answers are just hints.
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