Sorry you are having problems with Firefox.

It is possible you have malware. I note there is something called a user.js file listed in your System Information, and if you did not create that yourself it may have been malware that did that.

Please look for the file user.js in the Firefox profile. Have a look at its contents with Notepad and paste the content in to your next reply

• For background info see http://kb.mozillazine.org/User.js_file
• See Profiles - Where Firefox stores your bookmarks, passwords and other user data_how-do-i-find-my-profile

The troubleshooting information page has a button to open the profile Folder use:

MenuButton {Threebar icon) -> Help {(?) icon) -> 
Troubleshooting Information -> Profile [Show Folder]

Please scam with all the tools listed in this article

• Troubleshoot Firefox issues caused by malware

Please post back to say what you find, how you get on or if you need more help.

Hey, thanks for reply!

This is what was written in the "user.js" file, i have not edited anything in the file myself.

user_pref("plugin.state.npconduitfirefoxplugin", 0); user_pref("plugin.state.nptnt", 2); user_pref("plugin.state.nptnt", 2);

user_pref("browser.search.defaultenginename", "FindWide"); user_pref("browser.keywordURLPromptDeclined", 1);

user_pref("browser.startup.page", 1);

user_pref("browser.newtab.url", "");

I am currently running the Malwarebytes scan, will update you when that is done. Hopefully this will help :)

Hey, a little update after everything.

I ran the Malwarebytes scan and it showed nothing, however i found out that my mozilla was out-of-date so i updated it. I also reset the browser in the trouble-shooting page, and now everything works perfectly.

Thanks for the help:)

Thanks, Well done.

OK you should delete that user.js file it is making or trying to make changes to Firefox without you knowing it.. Note the mention of npconduitfirefoxplugin" Conduit is well known as malware or at least a ususally unwanted program.

It is normally best to make changes to the Firefox profile whilst Firefox is closed. You will find the profile the easiest whilst Firefox is open. So open the profile folder then close Firefox before deleting the file. Finally restart Firefox.

Some of those tools mentioned in the help article find things others do not so please scan with the other tools after you scan with malwarebytes.

Once everything is cleaned up it may be worth checking again that the file user.js is not reappearing. If it is reappearing the scans have missed something.

Fake Updates Note Firefox will be updating itself to Fx48 anytime now; if it has not already done so. You posted using Fx47.0.1 which was the correct version at that time. Take care though not to fall for fake updates that pop up as websites.with official looking logos.

• See Update Firefox to the latest release
  • I found a fake Firefox update

Malware Advice & tools There are good sites offering free tools and advice for malware issues but again be careful because there are also total scams and malicious sites, and others that at the least offer very bad value for money. Some masquerade as Firefox sites

• Avoid and report Mozilla tech support scams