Do you see any special icons at the left end of the location/address bar? You can see a special padlock at the left end of the location/address bar. *a padlock with a strike through means that mixed active content is blocked. *a padlock with an exclamation mark attached means that mixed passive content (e.g. images) is present, but not blocked. The shield icon, previously used for mixed active content, is now used for Tracking Protection. *https://support.mozilla.org/en-US/kb/mixed-content-blocking-firefox *https://support.mozilla.org/en-US/kb/control-center-site-privacy-and-security-firefox *https://developer.mozilla.org/Security/MixedContent ---- If you use extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) that can block (wanted) content (e.g. Adblock Plus, NoScript, Ghostery, uBlock Origin) always make sure such extensions do not block (wanted) content. *make sure your extensions and filters are updated to the latest version Start Firefox in <u>Safe Mode</u> to check if one of the extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) or if hardware acceleration is causing the problem. *switch to the DEFAULT theme: "3-bar" menu button or Tools -> Add-ons -> Appearance *do NOT click the "Refresh Firefox" button on the Safe Mode start window *https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode *https://support.mozilla.org/en-US/kb/troubleshoot-extensions-themes-to-fix-problems

There aren't any special icon at the left end of the address bar and I do not have any Extensions selected.

Correction: Now I see the exclamation point and the padlock. IT states that Firefox is blocking parts of the page that may track your browsing. It gives me the option to disable it for this session. Should I do that?