Firefox cannot open certain sites
When I try to log onto a secure website, such as a bank or tax office, when you hit the log on button, firefox opens a new window, not in a tab, with just the address bar at the top saying search bookmarks and history, and goes no further. This has only happened recently, the problem does not occur in safari.
Alla svar (1)
Start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of your add-ons is causing your problem (switch to the DEFAULT theme: Tools > Add-ons > Themes).
See Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems and Troubleshoot issues with plugins like Flash or Java to fix common Firefox problems