Cortana is a great artificial intelligent (AI) assistant designed to help you control your Windows 10 computer or search the web. It works with voice commands or as you type. However, for searching the web, Cortana is hardwired to search using Microsoft's own search engine, Bing. It's also required to default to the company's preferred browser, Microsoft Edge. Microsoft claims this is so Cortana can deliver personalized search results in an end-to-end environment.
Not everyone loves Edge or Bing. If you prefer using other search tools, such as Google, Firefox or Yahoo, there's currently no easy way to make Cortana access them without disabling the AI. There are some workarounds to make Cortana pull up search results from other search engines and web browsers, if you know where to look.
Unfortunately, this isn't a perfect solution. Cortana will still give you an initial voice answer using information found on Bing. However, by following the steps below, you can change the settings so that expanded search results come from your preferred search engines. You can even have them open in your default web browser, rather than Microsoft Edge.
Step 1. Switch your default browser.
Download the most recent browser of your choice. Then, in Windows 10 Settings, go to Apps > Default Apps. Select your default web browser to Google Chrome, Mozilla Firefox or whatever you prefer.
Step 2. Download and Install Edge Deflector.
Since Cortana will open all search results Microsoft Edge, despite your default browser being something else, you'll need to deflect this action. Edge Deflector is a free program that redirects Windows to open your default browser when it tries to open Edge.
Step 3. For Google Chrome: Download and Install Chrometana.
Once you make it so Cortana can only access your default browser, it will still search with Bing. Chrometana is a free Chrome extension that, similar to Edge Deflector, will redirect Cortana from Bing to either Google, Yahoo or DuckDuckGo. You can choose to redirect all Bing searches to your preferred search engine, not just ones from Cortana.
For Mozilla Firefox: Download and Install Bing-Google or Bing-DDG extensions.
You can find and download these extensions on Firefox's Add-ons page. They will redirect Bing searches on Firefox to the respective search engines.