First, I'm working through TeamViewer 10 setting up another computer. I started by installing FF 27 because I like the older version. It created a problem so I updated to FF35. The problem's still there. I've cleared the cache, restarted both FF and the computer, and reset the page style to "No Style". My next step is to uninstall and reinstall FF, but I hope I don't have to do that. Somehow I don't think that will fix the problem. THE PROBLEM: FF displays almost all pages normally based on html script (graphics, text, animation, etc. are all okay). But when I go to any Mozilla page all it shows is text in non-html format. it looks like an outline form with all links blue + underlined. The links work, but continue the non-html script. Also, when I ask FF to go to Add-ons it does the same think. Even then, when I click on the download link, it gives me an error message saying "There was an error downloading . . .". If I try to download the Windows version from the first page I get "Secure Connection Failed". What's wrong? Why is html working for all other web sites but not for Mozilla? I don't think there is anything wrong with TeamViewer or it wouldn't work for other sites.