hello, it looks like you have some forms of adware/malware present on your system, so please perform all those steps:: # Download and install the latest version of firefox from https://www.mozilla.org/firefox/all/ # [[Reset Firefox – easily fix most problems|refresh firefox]] (this will keep your bookmarks and passwords) # finally run a full scan of your system with different security tools like the [http://www.malwarebytes.org/products/malwarebytes_free free version of malwarebytes] and [https://toolslib.net/downloads/viewdownload/1-adwcleaner/ adwcleaner] to make sure that adware isn't present in other places of your system as well. [[Troubleshoot Firefox issues caused by malware]]