Microsoft Software products are not open source. To get the products, you must buy them. You can purchase an individual product license for each products or volume license for organisation products and renew them after a specified period. Like other software and hardware companies, Microsoft cracked a war on counterfeit products along time ago. Let’s say it has been partly successful. Microsoft products are easily found and can be downloaded online. You only need to buy a license for the product. If you know a reputable dealer, you can purchase the products with their respective license. Some people opt for already cracked software or crack the software by using cracking tools. By this, they end up with counterfeit products. I had shared two opportunities earlier on this blog which allowed users to get Microsoft Windows at rock-bottom prices, the Windows 8 activation for $14.99 and the free upgrade to Windows 10 offer, however, these oppurtunities no longer exist and all you can do is to hunt for a discount or bargain deal on original Microsoft software as discussed below.