Microsoft's Windows 10, the corporation's latest operating system, launches Wednesday (July 28). Windows 10 corrects Windows 8 problems and adds new features. Windows' 1.5 billion users will find the feel and look of the venerable operating system introduced in 1985 has returned.

Microsoft's has had some problems with updates to the Windows operating system; Windows 8 is probably best known. Windows 8, designed for devices used as both a PC and a tablet, failed to meet the mark. The OS was beset by problems, confused users, and did not enhance users computer experience. A flood of reports of inferior performance by Windows 8---confusing changes, and difficulty of use---meant the majority of Windows users did not upgrade from release 7. Windows 8's failure led to the downfall of Microsoft's CEO being fire. His replacement, Satya Nadella, has admitted the release was flawed.