When you claim your free upgrade to Windows 10, the operating system pulls a nasty trick that could confuse non-techies that don’t know how to go digging around in system settings. The express installation option–a.k.a. the one non-technical users will choose–automatically sets your default web browser to Microsoft’s new Edge, even if you defaulted to Chrome, Firefox, Opera, or another web browser in Windows 7 or 8.
Simply put, the way Windows 10 upgrades handle browser settings don’t respect the previous choices you’ve made, as Mozilla CEO Chris beard said this week.