Finally an extension to make cortana worth having. No one likes bing no point to make people force to use it.

Use this with EdgeDeflector and you'll almost fix Cortana.

Works perfectly with EdgeDeflector on Windows 10.

Was working perfectly until the latest Firefox update. Now it has been disabled by Firefox. How can I make it work again?

perfecto

Basically Bing-Google for Firefox Quantum. Perfect.

After Firefox updated to version 57, I couldn't use the Bing-Google extension which worked pretty well. https://addons.mozilla.org/en-GB/firefox/addon/bing-google-1/?src=api
This addon does the same job, so it is looks like a good replacement. I use it with Cortana which otherwise redirects me to Bing, but I do not like Bing. Good by, Bing! Thank you, developer wools.
P.S. Also, it does not seem to require any other software, like the previous extension which required to install another program.

Does exactly what it says it does! I just like having Bing as a homepage better than Google. The daily photos make it a lot more attractive, and now I can have the best of both worlds. I disabled Cortana so I don't know how well that feature works. Anyways, thanks!