New update of FireFox 29 guard affected by errors "Firefox is alreay underway of execution".

I am running Windows 8.1 and has been using Firefox in full transparency. Since the upgrade to Firefox 29, he guard affected by errors "Firefox is already running". Then I have to stop in the Task Manager to start. I deleted the parent.lock several times with no luck. I've uninstalled and reinstalled Firefox several times without success. I use the Windows Firewall and Avast Antivirus. I even uninstalled Avast temporarily, where he was responsible for the problems, no change. I have Firefox on my daughter's computer and it's been upgraded to Firefox 29 as well. His computer running Windows 7 and without problems. Please help, I resorted to the use of IE11. I like chrome, opera, etc. and back to Firefox.

You can try to update to Firefox 29.0.1 which will be released tomorrow (Friday) to see if that helps with this problem.

Tags: Firefox

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