Just read this piece of news on BBC -
BBC NEWS | Technology | The end of an era - Windows 3.x
An application has expectedly quit.
Windows 3.x has come to the closing moments of its long life.
On 1 November Microsoft stopped issuing licences for the software that made its debut in May 1990 in the US.
The various versions of Windows 3.x (including 3.11) released in the early 1990s, were the first of Microsoft's graphical user interfaces to win huge worldwide success.
They helped Microsoft establish itself and set the trend for how it makes its revenues, and what drives the company until the present day.