Microsoft Edge is the default web browser on Microsoft 10 S
Are there any defaults that I cannot change on my Windows 10 S PC?
"Yes, Microsoft Edge is the default web browser on Microsoft 10 S. You are able to download another browser that might be available from the Windows Store, but Microsoft Edge will remain the default if, for example, you open an .htm file. Additionally, the default search provider in Microsoft Edge and Internet Explorer cannot be changed."