Start > Run > firefox.exe -p {ENTER}

Hi magnets, as a test of whether one of your add-ons or custom settings might be responsible for this problem, could you create a second Firefox profile? That's a parallel personal settings folder. You can easily create a new profile and switch between profiles using Firefox's profile manager. If you exit all Firefox windows, you can start up in the Profile Manager using: Start > Run > firefox.exe -p {ENTER} For best results, accept the standard location and assign a name you'll recognize (like TEST). Then start up Firefox in the new profile. Any time you want to switch profiles, close Firefox and return to this dialog. I recommend not deleting any profiles until you are sure you won't need the data stored in them. More info: [[Use the Profile Manager to create and remove Firefox profiles]] If you can browse without problems, you could exit, go back to your regular profile, and manually disable or remove nonessential extensions. orange Firefox button (or Tools menu) > Add-ons > Extensions category If you dislike manual troubleshooting, you also could try Firefox's Reset feature. This article has the details: [[Reset Firefox – easily fix most problems]].