With default installation settings, Windows 10 uses the Bing search engine when you perform a web search from the Start/taskbar search box. The web search results are automatically opened in the Edge browser even if you have set a different program as your default web browser.
Although it’s true that the Start/taskbar search is primarily used to launch installed programs and not to search the web, there are users who use it to search the web quickly.
Search Deflector is a free program developed to set your own search engine as the default start/taskbar search engine in Windows 10. The program also enables you to configure the Start/taskbar search to use a custom web browser instead of Edge to show search results.
According to the developer, the Search Deflector automatically redirects search made from Start/taskbar search box to the search engine and web browser you would like to use.
Here is how to use the Search Deflector to set a custom search engine and web browser as default for Start/taskbar search.
Make Google the default search engine for taskbar/Start search
Step 1: Visit this page of GitHub and download the latest version of Search Deflector installer.
Step 2: Run the installer. During the installation, you will get a Command Prompt window with a message asking to select one of the installed browsers to set as the default browser for Start/taskbar search.
Please enter the number appearing next to the browser entry and then hit Enter key.
When you are asked for the confirmation, type Y and then hit Enter key.
Step 3: Next, you will be asked to select a search engine. As you can see in the picture below, the tool offers over 12 search engines to choose from, and there is also an option to set a custom URL. Type the number that represents one of the listed browsers and then hit Enter key.
Type Y button when you are asked to confirm the selection.
Finally, when you get “Press Enter to close the setup” message, please do the same to close the Command Prompt window.