I noticed this morning I couldn’t change the default search engine for Cortana. She loads Bing by default and I rather have Google or DuckDuckGo. I searched the internet for possible fixes and I came across a work around.
If you use the Chrome browser, you can download an extension called Chrometana. After installing the extension, Chrometana will ask you to select your default browser: Google, DuckDuckGo or Yahoo. Obviously, you don’t want Bing as your default because then you wouldn’t need this extension.
Now when I type in a search, Cortana loads Bing and Chrome quickly forwards the request to my search engine of choice. Based on my searches, it seems Microsoft has no plans to allow a change in the default browser, so I will take this workaround for now.