Only a "zombie" process appears when Firefox is launched for the first time.
When I launch Firefox, only Firefox process appears in the Task Manager. Firefox window does not appear at all. When I launch Firefox for the second time, Firefox window appears normally and there are two Firefox processes in the Task Manager.
While writing this story, I have two Firefox processes in the Task Manager:
firefox.exe *32 Jussi 01 102 540K Firefox <= the second process firefox.exe *32 Jussi 01 1432K Firefox <= the first process
Why doesn't Firefox start at the first attempt?
The procedure repeats every time I try to launch Firefox.
Opaite Mbohovái (1)
A possible cause is security software (firewall,anti-virus) that blocks or restricts Firefox or the plugin-container process without informing you, possibly after detecting changes (update) to the Firefox program.
Remove all rules for Firefox and the plugin-container from the permissions list in the firewall and let your firewall ask again for permission to get full unrestricted access to internet for Firefox and the plugin-container process and the updater process.
See: