Recent answers to Some spam websites keep opening in my tabs, I removed some viruses and restared Firefox but all in vain.https://support.mozilla.org/en-US/questions/11120192016-02-26T23:45:35-08:00hello, please perform all these steps:
reset firefox (this will keep your bookmarks and passwords)2016-02-26T23:45:35-08:00philipphttps://support.mozilla.org/en-US/questions/1112019#answer-849543<p>hello, please perform all these steps:
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<ol><li> <a href="/en-US/kb/refresh-firefox-reset-add-ons-and-settings" rel="nofollow">reset firefox</a> (this will keep your bookmarks and passwords)
</li><li> afterwards go to the firefox menu ≡ &gt; addons &gt; extensions and in case there are still extensions listed there, disable them.
</li><li> finally run a full scan of your system with different security tools like the <a href="https://www.malwarebytes.org/antimalware/" rel="nofollow">free version of malwarebytes</a> and <a href="https://toolslib.net/downloads/viewdownload/1-adwcleaner/" rel="nofollow">adwcleaner</a> to make sure that adware isn't present in other places of your system as well.
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<p><a href="/en-US/kb/troubleshoot-firefox-issues-caused-malware" rel="nofollow">Troubleshoot Firefox issues caused by malware</a>
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