Where is prefs.js stored

As the prefs. However, as long as the anti-malware software detects it as dangerous it is a positive trait that Mozilla Firefox browser or any Mozilla-based application is compromised by a spyware program.

The fix is to remove the potentially unwanted program from the PC with the help of anti-malware software or manually. Manual removal of malware files requires being familiar with system files and registries. Removing important data accidentally can lead to permanent system damage. By purchasing the full version, you will be able to remove all malware threats instantly.

This will isolate all files and objects created by the ransomware so they will be removed efficiently. The steps bellow are applicable to all Windows versions. Mark Safe Boot option and then go to Network under it to tick it too. Remove from Windows. The best way to delete a program is to uninstall it.

Remove Virus From Your Browser. It is a JScript Script file. Please mark "Solved" the answer that really solve the problem, to help others with a similar problem.

The file prefs. The location of the Profile folder is in a location hidden by Windows by default , as are many Windows folders. If this reply solves your problem, please click "Solved It" next to this reply when signed-in to the forum.

Search Support Search. The services. There is a recent issue Firefox 67 where a crash trashes the prefs. That is still under investigation. If you are quitting Firefox normally without a crash, does anything in the following article look relevant:. How to fix preferences that won't save. But the permissions, if changed to, say, rwxrwxrwx , are also reset to rwxr-xr-x, and the file itself seems to be modified intermittently as I use Firefox. So it's being re-touched in real time, ostensibly undoing any changes every time.

I'm not brave enough to delete it outright since that page says that it'll clear all of my extensions' preferences. You shouldn't modify files like prefs. You should only do that when Firefox is closed. Firefox keeps a lot of data in memory and only writes to disk when you close Firefox.

The file name is incorrectly capitalized in the title of this article due to technical limitations in the software which powers the Knowledge Base. This page was last modified , 26 February This page has been accessed , times.