RE: The remote certificate is invalid according to the validation proc

Hi Bart,

Thank you for posting.

From your description, I understand that you're developing an .NET/ASP.NET
webservice and accessing it through .nett gernated proxy at client-side.
Also, the webservice is protected through https/ssl. However, at runtime
when try calling tha webservice , you're getting exception indicate that
the ssl protected connection can not be establshied, correct?

Based on my experience, such error is likely caused by the certificate used
in the SSL/HTTPS connection establishing could not be correctly validated.
In the code you provided, you also add client certificate in your
webservice proxy, so is your server-side service configured to require
client certificate (in IIS)? I'd suggest you consider perform the
following test first to verirfy whether the problem is due to client-side
cert validation or server certificate validation:

1. You can configure the webservice to not require client certificate and
try accessing the server service (without add client certificate) to see
whether it works.

2. If still report error, the problem is concerns with the server service's
SSL certificate or the servername you used to access the server. To do
further troubleshoot, you can first put an html page or aspx page in that
ssl/https protected IIS virtual directory/application and try using IE to
access that page to see whether you can correctly visit that page, also
make sure whether you'll get any warning or error dialog during the
visiting of that page. If there occurs any warning or error dialog, it
indicate there is something not quite correctly against the server SSL
certificate, and when we use webservice proxy to access the service, since
there is not UI to let us interactively process such error condition, it'll
end to an exception...

Please have a check through the above items. If there is anything unclear
or any other finding, please feel free to post here.

Regards,

Steven Cheng
Microsoft Online Community Support


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