I've got an interesting issue that has me perplexed...

There is an https web site that is frequently accessed by the staff here, and all but one can access it fine (using Internet Explorer). Any user logged in on this PC can not access the site using Internet Explorer. On this PC the site will not load in Internet Explorer (which is required due to activex controls) but will load in firefox. However this PC can load any other http/https site.

For the site we are trying to access, we get the following error:
Internet Explorer cannot display the webpage

What you can try:
Diagnose Connection Problems 
 
More information

This problem can be caused by a variety of issues, including:

• Internet connectivity has been lost.


• The website is temporarily unavailable.


• The Domain Name Server (DNS) is not reachable.


• The Domain Name Server (DNS) does not have a listing for the website's domain.


• There might be a typing error in the address.


• If this is an HTTPS (secure) address, click Tools, click Internet Options, click Advanced, and check to be sure the SSL and TLS protocols are enabled under the security section.

For offline users

You can still view subscribed feeds and some recently viewed webpages.
To view subscribed feeds

1.Click the Favorites Center button , click Feeds, and then click the feed you want to view.

To view recently visited webpages (might not work on all pages)

1.Click Tools, and then click Work Offline.
2.Click the Favorites Center button , click History, and then click the page you want to view.

If I click the "Diagnose Connection Problems" button, I get the error "The host may be down, or may not support a secure connection."

There is no proxy set up for the connection, and both SSL 3.0 and TLS 1.0 are allowed in the Advanced Options.

Using wireshark I can see that IE connects to the server and the certificate it transmitted. After this it is encrypted, but not much more is transmitted.

Help would be greatly appreciated!!!