How To Tell What Files IE Thinks Are “nonsecure”?

Question

We have a CMS system whose web interface gets served over HTTPS. This works beautifully for Firefox, but when we load it in IE6 or IE7, it complains that \"This page contain

Answer 1

Firefox has a number of bugs in mixed content detection. Generally you should try using Fiddler to spot insecure resources.

If you install a tool I wrote (www.bayden.com/dl/scriptfreesetup.exe) you will get a different mixed content prompt which shows the exact URL of the first insecure resource on the page. That tool is basically a prototype and you should uninstall it when you're done with it.