Exchange Certificate Error pops up sometimes

Hi Experts,

I have installed EXCH 2007 and Outlook clients from 2010 and 2013.
My problem is really strange because just sometimes the cert error pops up.

Certificate error: The name in the certificate does not match…

When I open my Outlook, sometimes the message pops up and sometimes not.
Can you help me to find the error ?
autodiscover-cert-error.JPG
Eprs_AdminSystem ArchitectAsked:
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Eprs_AdminSystem ArchitectAuthor Commented:
which steps I have to check in order ?
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MAS (MVE)EE Solution GuideCommented:
Please check my article to fix your certificate error
http://www.experts-exchange.com/articles/13676/Out-Of-office-not-working.html
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Will SzymkowskiSenior Solution ArchitectCommented:
This is due to your virtual directories not matching the FQDN that you have in your certificate. What you need to do is setup Split DNS and update your virtual directories to match the name that you have on your cert.

You can use my HowTo for setting up Split DNS and all of the Virtual Directory configuration. The HowTo is specific for Exchange 2013 but is virtually the same minus the Set-MAPIVirtualDirectory which is the last step as this is Exchange 2013 specific. Everything else is the same.

http://www.wsit.ca/how-tos/exchange-server-2/configure-split-dns-and-exchange-2013-virtual-directories/

Will.
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Eprs_AdminSystem ArchitectAuthor Commented:
ok , I found out the link for autodiscover has a mistake in my cert.
So I have to create a new certificate on the exchange.

Right ?
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Will SzymkowskiSenior Solution ArchitectCommented:
If this is a 3rd party SSL cert then you are going to have to re-issue a new CSR with the correct names. Get your cer file from them and complete the cert request.

From there you will then need to re-enable the new Exchange cert. Follow my HowTo.

Will.
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