Microsoft stopped supporting Windows 7 today, 13/1

Microsoft will officially free support Windows 7 platform from today, January 13, 2015, the first step to start the "death" of this very popular operating system in 2020.
Starting on January 13, 2015, Microsoft will begin the first step in the process of killing the Windows 7 operating system by discontinuing mainstream support for the operating system and instead will transition to Extended support.
This means that Microsoft office 2016 product key will no longer support Windows 7 from today, even if the user owns the software.
Windows 7 users are not really worried, though, as Microsoft will continue to release patches for Windows 7 until January 13, when Windows 7 officially becomes available. "Death" and stop all support. In addition, computer makers are still able to continue selling Windows 7 Professional edition products until January 2016.

However, from today, Microsoft will no longer release non-security updates, such as upgrades to improve system stability. Microsoft will also discontinue any new feature enhancements on Windows 7.
Although launched from 2009 but so far Windows 7 ultimate product key is still the most popular operating system in the personal computer market. By the end of December 2014, Windows accounted for 58% of the personal computer market and 62% of the overall Windows operating system market share.
One thing to note is that since Windows 8 was released to replace Windows 7, instead of the market share of Windows 7 has fallen, but this market share has increased compared to before. The market share of Windows 7 is now greater than the market share of Windows 8 and Windows 8.1 product key combined. This shows that the purpose of using Windows 8 to replace Microsoft Windows 7 was completely "bankrupt".
The biggest advantage of Windows 7 is the stable operation, superior to previous "Windows Vista" predecessor and friendly interface, easier to use than the next version is Windows 8.
After Windows XP, Windows 7 was the most successful version of Windows, despite the fact that the "software giant" built a completely new Windows 8 can not replace this version. With the release of Windows 10, which is expected to launch in 2015, inherits many of Windows 7's features, it's possible that users will be able to break up with this highly popular operating system to get a full-fledged product. all new Microsoft.