After 10 years of fully supporting Windows 7, Microsoft ended its official support for the out-of-date Windows operating system on Tuesday. The popular classic Windows 7 OS still runs on some 200 million PCs around the globe, according to industry estimates. Users include small business owners, some larger companies, and hordes of consumers holding onto aging personal computers. Microsoft committed to providing 10 years of product support when it released Windows 7 in 2009. The company’s focus now is on supporting new user experiences.