mozilla firefox start page keeps opening

(If the Profile Manager opens, select a profile and then hold down the Shift key again while clicking the 'Start Firefox' button.) In current Mozilla application versions, hold down the Shift key while double-clicking the Firefox/Thunderbird/SeaMonkey icon.This should not be confused with restarting the computer in Windows Safe Mode! Use one of these methods to start your Mozilla application in Safe Mode. Safe Mode also includes a number of troubleshooting options that allow you to make certain changes upon restarting your Mozilla application ( see below). Safe Mode has no effect on the following:.The userChrome.css and userContent.css files are ignored.

The Just-in-time (JIT) JavaScript compiler is disabled. The default theme is used, without a persona. Safe Mode temporarily affects the following:.Any changes made to preference settings remain in effect in Safe Mode, however, and all available plugins are used. Safe Mode also disables hardware acceleration, the Just-in-time (JIT) JavaScript compiler, and any changes made via userContent.css and userChrome.css. Safe Mode is a debugging startup mode available in Firefox, Thunderbird, and SeaMonkey 2, where all added extensions are disabled, the default theme is used, and default localstore settings (toolbar settings and controls) are used.

Mozilla firefox start page keeps opening