Microsoft no longer officially supports Windows 10, so do this if you want to keep using your older PC securely. Jason Chun is a CNET writer covering a range of topics in tech, home, wellness, finance ...

Support for Windows 10 is scheduled to end on Oct. 14. Although the older operating system is 10 years old, it's still used by up to 400 million computers and nearly 41% of PC owners. If you're among ...