How to remove the expired root certificate from your browser:

  • Click Security on the navigation toolbar, or choose security info from the Window menu.
  • A new window will open, with a menu of items on the left side. Click on "Signers".
  • A scrolling select-box will appear. Scroll down to the entry "Thawte Server CA".
  • Click on this entry, then click the Delete button.
  • You will be given a choice of two certificates, with their expiration dates shown. Delete only the expired one (expired in 1998), and not the current one (which is valid through 2020).
  • Your browser should now connect securely when you click on the order form link in the left-side menu.