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How do I reset strings in about:config?

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New Contributor

How do I reset strings in about:config?

I'm trying to reset some strings in about:config, and I right-click them, but there is no reset option! How do I do this? I've tried in safe mode, but no luck!

9 REPLIES
Site Moderator

Re: How do I reset strings in about:config?

If you can't reset a pref then the prefs already has the default value.

Which pref(s) do you have in mind and why do you want to change (reset) them?

New Contributor

Re: How do I reset strings in about:config?

Someone installed some video editing programs, and with the download some annoying programs/malware followed. The well known and annoying conduit search engine or what ever it is. So those are the prefs I'm trying to reset. The problem is, no matter what perf I try, the reset option isn't there. They're even say 'user set'! I'm at a loss...

Site Moderator

Re: How do I reset strings in about:config?

to make things easier you could reset the whole browser: Refresh Firefox - reset add-ons and settings

New Contributor

Re: How do I reset strings in about:config?

Tried that as well, but not everything got reset. Still two strings wich has something to do with conduit...

Site Moderator

Re: How do I reset strings in about:config?

Check for the presence of a mozilla.cfg file in the Firefox program folder to initialize some prefs.

This also involves the presence of a .js (JScript) file, probably in "defaults\pref" folder, that specifies to read this mozilla.cfg file.

If you have .js files apart from the channel-prefs.js file, that sets app.update.channel, in the defaultspref folder then open this file in an editor like Notepad and please post its content. Also please post the content of the mozilla.cfg file.

If you have this mozilla.cfg file then best is to do a clean reinstall of Firefox and remove the Firefox program folder.

Site Moderator

Re: How do I reset strings in about:config?

in this case please do a full scan of your system with the security software already in place and different tools like the free version of malwarebytes and adwcleaner.

New Contributor

Re: How do I reset strings in about:config?

So, I don't have any of the above files. Not the .cfg or any other .js than the channel-pref.

New Contributor

Re: How do I reset strings in about:config?

I'll go ahead and do a reinstall and se if that helps. Thanks for the quick replies!

Site Moderator

Re: How do I reset strings in about:config?

Did you check for the presence of a user.js file in the Firefox Profile Folder?

  • Help > Troubleshooting Information > Profile Directory: Show Folder