Part of that settlement involved Microsoft agreeing to give consumers a clear way of choosing another browser in the future in future versions of its Windows OS. But apparently Microsoft failed to do this with a subsequent version of Windows 7 that was distributed and activated 28 million times. This is an ongoing investigation into that failure, and when it first surfaced in June, Microsoft acknowledged the error, saying that it had "fallen short" of expectations and that it had "deep regret" over the mistake.