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why message warning about trying to trick firefox to another website/ insecure update

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  • 최종 답변자: cor-el

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From time to time I get a window within firefox warning that something is trying to trick firefox to go to another site / or trick firefox to download and insecure update.

The message ask me to report this to firefox

From time to time I get a window within firefox warning that something is trying to trick firefox to go to another site / or trick firefox to download and insecure update. The message ask me to report this to firefox

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This issue can be caused by the presence of leftover files in the Firefox program folder (defaults\pref) like a file firefox.js that overrides the update URL with a wrong link.

See my post here and do a clean reinstall and be sure to remove the Firefox program folder.


Download a fresh Firefox copy and save the file to the desktop.

  • Uninstall your current Firefox version.
  • Do not remove personal data when you uninstall the current version.

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

  • It is important to delete the Firefox program folder to remove all the files and make sure that there are no problems with files that were leftover after uninstalling.

Your bookmarks and other profile data are stored elsewhere in the Firefox Profile Folder and won't be affected by a reinstall, but make sure that you do not select to remove personal data if you uninstall Firefox.