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I am running firefox 19.0 on Windows 7 64 bit. 3 times in the last 2 weeks i cannot open firefox. I have to uninstall it and reinstall each time.
I have run firefox for a couple of years on windows7 64 bit. Just bought a new lap top - still window 7 64 bit. Rep[repeatedly, firefox stops working (i can't open it). I uninstall and reinstall. I did that yesterday. It worked for about 24 hours - then I had to do it again.
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Try the Firefox Safe Mode to see how it works there. The Safe Mode is a troubleshooting mode, which disables most add-ons.
(If you're not using it, switch to the Default theme.)
- You can open the Firefox 4.0+ Safe Mode by holding the Shift key when you use the Firefox desktop or Start menu shortcut.
- Or use the Help menu item and click on the Restart with Add-ons Disabled... menu item while Firefox is running.
Don't select anything right now, just use "'Start in Safe Mode" To exit the Firefox Safe Mode, just close Firefox and wait a few seconds before using the Firefox shortcut (without the Shift key) to open it again. If it is good in the Firefox Safe Mode, your problem is probably caused by an extension, and you need to figure out which one.
Please follow the Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems article for that.
When you figure out what's causing your issues, please let us know. It might help other users who have the same problem.