Mozilla Accuses Microsoft of Steering Users Toward Edge

Mozilla claims Microsoft uses Windows, Edge, Bing, and Copilot to push people away from their chosen browsers. The company says Microsoft plays fair in the European Economic Area due to the Digital Markets Act but uses deceptive tactics elsewhere. Mozilla cites tricky setup wording, search and widget links opening in Edge, and Edge remaining default for some file types.
Mozilla's Over The Edge 2.0 report, released 100 days before its latest blog, was written by deception-design specialists Dr. Harry Brignull and Cennydd Bowles. It examines how Windows, Edge, Bing, and Copilot allegedly nudge users away from their preferred browser. Mozilla says the Digital Markets Act compels fairer treatment in the European Economic Area, while other markets face different practices.
Cited examples include setup wording, search results and widget links launching in Edge, and Edge retaining defaults for PDF and SVG files. Mozilla also points to taskbar pinning, Copilot side-panel links, and Windows Backup restoring Edge as default. It says Microsoft discussed the report but changed little, respecting choice mainly when forced.
This dispute may affect everyday Windows users, especially those who prefer non-Edge browsers, by shaping how easily they can maintain defaults and avoid unintended switches. If regulators or courts examine such design choices, platform owners could face pressure to make browser selection clearer. Conversely, tighter rules might influence how AI assistants and operating systems distribute services, potentially affecting competition, user trust, and access to online information across regions.