Why do some HTTPS sites not load properly?

HTTPS pages can fail to load, or only partially load, for many reasons.

Here is a set of frequently accessed HTTP and HTTPS sites that often cause problems with Web proxy servers, including Content Gateway. Affected sites include:

  • Microsoft Update
  • Skype
  • WebEx
  • Real Networks Real Player
  • Citrix collaboration products
  • Firefox Update
  • Yahoo! Messenger with Pidgin messaging client
  • Logitech Messenger Agent and VirtualBox

Here are 2 Technical Library articles that discuss these problem sites: