The issue focused on problems with software systems that handle electronic devices and Web browsers. Internet Explorer was found to be particularly problematic. Microsoft acknowledged the problem in May of last year, but said it would take two years to fix the software.

So far, Windows 8 has been successful for Microsoft. It's sold more than 10 million copies since its release in October 2012. Windows 7 still holds a slight lead over Windows 8 in PC sales, according to Net Applications.Get daily updates directly to your inbox Subscribe