Hi,
We have a problem with our web site. Some users cannot load any secure HTTPS pages.
Clients receives error ?Page cannot be displayed?. All other pages are
working just fine.
 
We have tested this problem on several computers:
 
1. In one case, when using high-speed connection this problem
disappears. The same computers
connected to the Internet via dial-up cannot reach any https pages.
 
2. In other cases, using a different ISP company solves this problem.
But when using other providers https page cannot be loaded.

Problem is identical for any web-browser.
Turning off firewall did not resolve the problem.
Server has only one external network interface.
You can check the web-site: www.compuvest.us. Click ?Sign In? to test https page. 
 
We are using the following software for the web server: Microsoft
Windows 2003 Advanced Server, Microsoft Windows IIS 6.0.
 
If you need we will send additional server configuration specs.

maybe you didnt setup proxy server (you need to specify one for http
and for https at Settings>Proxies) or you nee d to enable SSL in
settings

radja-ga:

Another *possibility* is unreliable DNS resolution and timeout due to
that.  Can you have the client try IP number instead of domain name
and see if that makes a difference.

See http://www.experts-exchange.com/Web/Web_Servers/IIS/Q_21017447.html
 (scroll down) for some additional information.
--
[I am not an official GA researcher.]