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SSL Error When Connecting to Site

Can anyone tell me what may be causing this error other than what the error states? Could this be a firewall rejecting the connection?

Network Error (ssl_failed)

A secure SSL session could not be established with the Web Site: "SSL client certificate not supported". This is typically caused by a Web Site that is not configured to accept SSL connections, but could be because the Proxy does not trust the Web Site's certificate authority.

My users are not able to connect to the site from work, but they can connect from home. Any suggestions would be greatly appreciated.
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BoxunloX
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BoxunloX
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1 Solution
 
ketelhuisCommented:
Sounds like a DNS related error. Is the internal DNS name the same as the external name (which should ben the name which is assigned to the cert) ? Is it resolvable?
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BoxunloXAuthor Commented:
I assume you mean the internal DNS name of the web server? I have no clue. The site is a SharePoint portal that I do not manage but that a couple of my users need to access for work purposes. The portal is external to my company. I guess I just need to contact the site's admins and find out what is going on.
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ketelhuisCommented:
Sounds like a good idea :) The SSL certificate contains a DNS name. When you connect externally (i.e. from home) the DNS name matches the certificate's name. When you connect internally, maybe you use a different name. example:

from home you go to sps.mycompany.com
from work you go to sps.mycompany.local

the certificate is registered to sps.mycompany.com.

Another thing: maybe there's a reverse proxy not having the right root certificates.

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BoxunloXAuthor Commented:
This issue ended up being a certificate trust issue between our domain and the external site. It is still being worked with the administrators of the other site.
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BoxunloXAuthor Commented:
After elevating the issue to a level higher than mine I was told that the issue was a proxy issue. Thanks!
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