Problem with Activesync Exchange 2007 Server and Windows Mobile 6.5

I have an HTC HD mini running Windows Mobile 6.5. I have been able to sync Outlook to the Exchange
Server in the past but today I cannot.

I receive the following error message.

The security certificate on the server is not valid. Contact your Exchange Server administrator or
ISP to install a valid certificate on the server.
Support code: 0x80072F0D

The exchange server is functioning correctly, and users running iPhone and Android can sync.
Xandra410502Asked:
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Xandra410502Connect With a Mentor Author Commented:
I found the answer. Both my certificate and that on the Exchange server were valid. However the intermediate certificate did not exist on the device and was not sent by the server. Once I installed the intermediate certificate on the device, remote synchronisation was possible.
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Shreedhar EtteCommented:
Hi,

Refer these articles:
http://support.microsoft.com/kb/927465

http://support.microsoft.com/kb/915438

Hope this helps,
Shree
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Xandra410502Author Commented:
I have inspected the Verisign certificate on the server and it is valid. There is however not an identical certificate on my phone, do I need to install a certificate. If so how do I establish which one.

I have experimented and can get the phone to sync with the exchange server if it does not have a partnership with my home pc. Once this is established, the same fault occurs i.e. security certificate on the server not valid.
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