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My firefox has been hijkacked. I cannot reset my home page & other setting no can I reset to default settings. Nothing shown on your site works. Advice?

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  • 最近回覆由 cor-el

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I am unable to change any Firefox setting or return to default following all the instructions found on the support site. Clearly firefox has been hijacked but I have no idea by what. I am at a loss what to do but uninstall firefox and use some other browser.

I am unable to change any Firefox setting or return to default following all the instructions found on the support site. Clearly firefox has been hijacked but I have no idea by what. I am at a loss what to do but uninstall firefox and use some other browser.

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Sometimes a problem with Firefox may be a result of malware installed on your computer, that you may not be aware of.

You can try these free programs to scan for malware, which work with your existing antivirus software:

Microsoft Security Essentials is a good permanent antivirus for Windows 7/Vista/XP if you don't already have one.

Further information can be found in the Troubleshoot Firefox issues caused by malware article.

Did this fix your problems? Please report back to us!

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Do any prefs have a locked status if you check them on the about:config page?


Do a clean reinstall and delete the Firefox program before (re)installing a fresh copy of the current Firefox release.

If possible uninstall your current Firefox version to cleanup the Windows registry and settings in security software.

  • Do NOT remove "personal data" when you uninstall your current Firefox version, because this will remove all profile folders and you lose personal data like bookmarks and passwords including data in profiles created by other Firefox versions.

Remove the Firefox program before installing that newly downloaded copy of the Firefox installer.

  • (32 bit Windows) "C:\Program Files\Mozilla Firefox\"
  • (64 bit Windows) "C:\Program Files (x86)\Mozilla Firefox\"

Your bookmarks and other personal data are stored in the Firefox profile folder and won't be affected by an uninstall and (re)install, but make sure that "remove personal data" is NOT selected when you uninstall Firefox.

If you keep having problems then also create a new profile.