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Problem with Activesync Exchange 2007 Server and Windows Mobile 6.5

Posted on 2010-09-15
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Last Modified: 2013-12-05
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.
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Question by:Xandra410502
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3 Comments
 
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Expert Comment

by:Shreedhar Ette
ID: 33686259
Hi,

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

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

Hope this helps,
Shree
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Author Comment

by:Xandra410502
ID: 33687334
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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Accepted Solution

by:
Xandra410502 earned 0 total points
ID: 33708175
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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