New tab search engine to Yahoo
I want to change my new tab search engine from Yahoo to Google. I tried changing the settings from the options, didn't work, tried resetting firefox, didn't work. I even went to About: config and tried to find browser.newtab.url it didn't have it, so I'm wondering what I can do to get yahoo removed from my new tab search engine.
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Use this for new tab : https://addons.mozilla.org/en-US/firefox/addon/new-tab-override/
As for the stuck Yahoo Engine. If above does not change it just for new tabs then will have to : uninstall Firefox. Then Delete the Mozilla Firefox Folders in C:\Program Files , C:\Program Files(x86) & C:\ProgramData Then restart system. Then run Windows Disk Cleanup. (Note: This should be Pinned and run Weekly, If never done below expect 10's of gig's) Then run it again and click the button that says Cleanup System Files. Note: your Firefox Profile is saved. But you should make a back up before you do :
- https://support.mozilla.org/en-US/kb/back-and-restore-information-firefox-profiles
- https://support.mozilla.org/en-US/kb/export-firefox-bookmarks-to-backup-or-transfer
Reinstall with Current Release Firefox 59.0.1 with a Full Version Installer
If the above does not fix it then some how that is stuck as a preference in your Profile. Create a new profile as a TEST to check if your current profile is causing the problem.
- https://support.mozilla.org/en-US/kb/profiles-where-firefox-stores-user-data
- https://support.mozilla.org/kb/profile-manager-create-and-remove-firefox-profiles
- http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Profile_issues
If the new profile works then you can transfer files from a previously used profile to the new profile, but be cautious not to copy corrupted files to avoid carrying over the problem. Never work with original files.
- https://support.mozilla.org/en-US/kb/recovering-important-data-from-an-old-profile
- http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox
Please let us know if this solved your issue or if need further assistance.
Do you have this Yahoo search engine: "Yahoo Search Engine"
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.
You should only find channel-prefs.js in the "defaults\pref" location. Any file found here apart from channel-prefs.js is suspicious. You can check the content of the file in a text editor (use open with and do not double-click the file).
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.