How to remove “delta-search.com” from FireFox?

Before removing delta-search.com from browser for browser startup homepage or new tab url, first you need to delete it from your system. For this you should uninstall it via Programs and Features or Add/Remove Programs in Control Panel.

1. Type about:config in Firefox browser address bar.
2. There will be following alter message on browser.
3. Click on “I’will be careful, I promise!” button.
4. There will be firefox about:config panel opened. In Search bar type delta you will see all results which has “delta” values. In these results you will find browser.newtab.url under Preference Name. Double click on it, small dialog box will open; enter your preferred url that you want to be opened in new tab.

You can also change browser startup homepage by same way.