Windows 10 - How to Change Cortana's Default Search Engine

The fact that Windows 10 doesn't provide any built-in option to change default search engine of Cortana led many people into thinking that the intelligent personal assistant works exclusively with Bing. Want to change the default search engine of Cortana or Windows Search? There exist a simple workaround that involves using Google Chrome or Firefox.

Prerequisites

- Donwload and install Google Chrome or Firefox. 
- Set Google Chrome or Firefox as your default web browser. 

Set your default web browser

Click on Start > Settings > System > Default apps > Web browser

Choose your default web browser. 

Change Cortana's default search engine with Firefox

Open Firefox, click on the Menu button > Options. Go to the Search section, select your default search engine (e.g. Google) and then tick the Use this search engine for searches from Windows checkbox:

Close the Options menu and try to make a web search with Cortana. 

Change Cortana's default search engine with Google Chrome

Open Google Chrome and then install the Bing2google extension from this link. Once installed, all your web searches made with Cortana or Windows Search will be redirected to Google.com: 

Want to redirect Bing searches to search engines other than Google? Get the Chrometana extension instead; It allows you to use the search engine of your selection.