We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Wo archive tread sia. Meɖekuku bia biabia yeye ne ehia kpeɖeŋu.

wont open after install

  • 2 ŋuɖoɖowo
  • 1 masɔmasɔ sia le esi
  • 10 views
  • Nuɖoɖo mlɔetɔ cor-el

sgtjohn
sgtjohn
more options

I have installed firefox 3 times after install, when i try to open it, i get firefox already running, close firefox and try again. i click close, then try to reopen but get same error. any solutions

I have installed firefox 3 times after install, when i try to open it, i get firefox already running, close firefox and try again. i click close, then try to reopen but get same error. any solutions

All Replies (2)

FredMcD
FredMcD
more options

Start Firefox in Safe Mode {web Link} by holding down the <Shift>
(Mac Options) key, and then starting Firefox. Is the problem still there?

Start your Computer in safe mode with networking. Then start Firefox. Try Safe web sites. Is the problem still there?

Starting The Computer In Safe Mode;
Free Online Encyclopedia

While in Safe Mode,

Type about:support in the address bar and press Enter. Under the main banner, press the button; Copy Text To Clipboard.. Then in the reply box at the bottom of this page, do a right click in the box and select Paste. This will show us your system details. No Personal Information Is Collected.

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

See:

Try to delete the parent.lock file in the profile folder

  • C:\Users\<user>\AppData\Roaming\Mozilla\Firefox\Profiles\<profile>\

"AppData" (XP: Application Data; Mac: ~/Library; Linux: ~/.mozilla) is a hidden folder.