Microsoft has sold 40 million Windows 8 licenses since October 26.
Tami Reller, chief marketing and financial officer for Windows, announced the tally today during her appearance at the Credit Suisse Annual Tech Conference.
Microsoft had not released any sales figures for Windows 8 other than saying the company sold 4 million upgrade licenses of the operating system to those with previous versions of Windows during the first three days it was available. Microsoft launched Windows 8 commercially on October 26.
Microsoft says it's sold 40 million Windows 8 licenses so far | Microsoft - CNET News