It actually is Firefox's fault. Norton worked flawlessly with it until about 2 years ago when FF decided to use a new code different from the industry standard. Norton has rewritten it's code to accommodate FF multiple times. It has never "not worked" for me on other browsers. I try not to use them as they (MS and Google) sell your personal information without even asking you and finally convinced congress to make it legal after doing that for years. I was going to drop Norton when my current subscription ended soon and tried AVG and then McAffee. Both horribly buggy and not user friendly. Now I can't get rid of AVG, it keeps reinstalling itself. I even went into DOS and removed the entire directory for AVG. It is a virus!