Windows is an operating system; we can say windows are the basic of any computer system. There are many operating systems in worldwide, such as Linux, UNIX, and XP. But windows are the oldest operating system. Latest operating is Window 10 which is the modern version of windows history. I f you have any issue regarding Microsoft windows then you should call at +1-800-826-8068 as well our windows support number website is-
http://www.microsoftoutlookoffice365.com/window-outlook-support.html