Microsoft Windows is a sequence of graphical interface operating systems developed, marketed, and sold by Microsoft Corporation. Some of its features are: (1) Windows Live - is a group of tools and software for Windows’ use. Users can have access to Windows Live by making a free account. This includes a chat client, networking tools, a movie maker and photo gallery, and email and Internet functions. A user can select to download and utilize all of these programs, or only download a selection of them depending on needs; (2) Windows Search - is a search function included with Windows that permits the user to search for files by name, date and file, text within a file in case user cannot remember the document name, and the entire computer. Windows Search is located in the start menu; (3) Windows Updates – this includes an automatic update feature with the purpose of keeping its operating system safe and up-to-date. Security updates are fixed with this feature to help protect against new risks as well as to apply any software updates and bug fixes. Users can set this feature to check for new updates and install them directly or turn off the automatic update feature and check for updates manually on their own; and (4) Windows Taskbar - is the central navigation tool for Windows. It includes the Start Menu, which allows users to open programs and features. It also includes a clock, calendar, and program icons for things such as usually utilized programs and updates. The taskbar and the items displayed in it are customizable. It is located at the bottom of the screen by default, but can be moved to the top or sides of the screen if the user chooses. The company launched an operating setting named Windows on November 20, 1985 as an add-on to MS-DOS in response to the rising interest in graphical user interfaces (GUIs). Microsoft Windows came to rule the world's personal computer market with over 90% market share, overtaking Mac OS, which had been introduced in 1984. The most recent client version of Windows is Windows 7; the most recent server version is Windows Server 2012; the most recent mobile version is Windows Phone 7.5.