Start Firefox in safe mode by holding down the shift key while starting the Firefox web browser.
After Firefox has started in safe mode, from the Firefox menu select Help => Troubleshooting Information.
On the right side of the page, under the "Reset Firefox to its default state" section, click the "Reset Firefox ..." button.
Firefox will save some old browser information to a folder on your Desktop, and then reset the web browser to the Firefox defaults. (Your Bookmarks won't get deleted). I don't think I'll need this folder for anything and I'll just delete it in a couple of days.
Firefox will restart and work normally again!作者: awlag 時間: 2014-7-2 04:20 PM