Firefox will not start. After double-clicking the icon, the cursor indicates the system is busy, but no icon appears on the taskbar and no window opens on screen. Task Ma… (xem thêm)
Firefox will not start. After double-clicking the icon, the cursor indicates the system is busy, but no icon appears on the taskbar and no window opens on screen. Task Manager shows a Firefox process running (not running before trying to start Firefox). With UAC activated, UAC window opens and asks whether to allow Firefox to make changes to the computer. After choosing Yes, the UAC window keeps opening and asking, over and over. Have reinstalled Firefox. Have tried to start Firefox in Safe Mode (both Shift>double-click and Run command). Have tried to start Profile Manager from Run command (firefox.exe -P and "C:\Program Files\Mozilla Firefox\firefox.exe" -P). Neither Firefox nor Profile Manager will open. Found a file in the Profiles folder called Parent.Lock and deleted it, with no apparent effect. Would like to know what might get Firefox to work.