This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Bing has 'invaded' my computer and substituted itself as the search engine with Firefox - I do not want Bing!

  • 3 replies
  • 1 has this problem
  • 15 views
  • Paskiausią atsakymą parašė cor-el

more options

I have for many years used Firefox with Google as the search engine.

Today out of the blue Bing appeared as the search engine - without me manually changing anything.

I want to use Google as my preferred search engine

It seems that Bing has invaded as a malware would perhaps on the back of some other invasive add on or similar.

I have gone to options and settings and after removing Bing (supposedly) it reappears when I do a search.

Very frustrating for an occasional user.

I have for many years used Firefox with Google as the search engine. Today out of the blue Bing appeared as the search engine - without me manually changing anything. I want to use Google as my preferred search engine It seems that Bing has invaded as a malware would perhaps on the back of some other invasive add on or similar. I have gone to options and settings and after removing Bing (supposedly) it reappears when I do a search. Very frustrating for an occasional user.

All Replies (3)

more options

go to tools > options > search

and choose a search engine from the drop down menu under Default Search Engine

more options

or remove any search engines extensions

more options

This could be an issue caused by AdAware or Web Companion from Lavasoft.

You can look for a file named dsengine.js in these locations. There should only be channel-prefs.js in this location, any other file present is suspicious and you can check its content in a plain text editor to see what file it points to.

C:\Program Files\Mozilla Firefox\defaults\pref\
C:\Program Files (x86)\Mozilla Firefox\defaults\pref\

You can look for a file named dsengine.cfg in the main Firefox program folder.

C:\Program Files\Mozilla Firefox\
C:\Program Files (x86)\Mozilla Firefox\

Delete the dsengine.js and dsengine.cfg files when present.

Modified by cor-el