After the European Commission, Russia decided to further investigate about Microsoft for abuse of a dominant position and anti-trust violation for computer system. this procedure was launched after Microsoft decided to stop selling Windows XP licenses, pushing customers to purchase Vista. In addition, the pricing of Vista numerous versions will be investigated. It is quite amazing that Windows XP, the OS that made Microsoft so strong, is now its main problem as the company can not release a good replacing OS Windows 7 is next after Vista, for sure Microsoft expects it to be more successful