Firefox lost 6-9 million downloads in EU browser choice ‘glitch’
Summary: Mozilla's general counsel estimates between 6-9 million lost Firefox browser downloads thanks to Microsoft failing to include the ‘browser choice’ screen in latest versions of Windows 7. — Zack Whittaker
Context & Ripple Effects
Firefox had previously benefited when Internet Explorer weakened, including a 2009 period of Firefox share gains, and Germany’s browser-security warning was reported to have lifted Firefox interest in 2010. The missing Windows 7 choice screen therefore matters as a lost distribution moment in the EU, not merely a software-display defect.
First-order effects
- Mozilla estimates that Firefox missed 6–9 million EU downloads while Microsoft’s updated Windows 7 versions omitted the browser-choice screen.
- Microsoft’s omission leaves EU Windows 7 users without the prompted comparison that could have directed downloads to Firefox and other alternative browsers.
Second-order effects
- Firefox’s ability to gain users through visibility at Windows setup is weakened, putting more weight on Mozilla’s own acquisition channels while Microsoft’s browser retains the advantage of its Windows distribution.
- Other browsers eligible for the choice screen also lose a neutral route to reach EU Windows 7 users, making browser competition more dependent on default placement.
Third-order effects
- The episode shows how an operating system’s setup flow can shape browser competition: if choice-screen implementation is unreliable, oversight of distribution mechanisms becomes as consequential as browser features.
- Browser rivalry is increasingly a contest over defaults and discovery rather than installs alone, because a missed prompt can remove millions of potential download opportunities.
The trend: EU browser competition is moving toward scrutiny of operating-system distribution choices, with user prompts acting as a material counterweight to default software.