If you still use Windows 10, you need to take action to ensure your PC still receives critical security updates.

If a Windows upgrade has ever gone sideways on you, you know how vague and unhelpful the error messages can be. Here are my go-to troubleshooting tricks when that happens.

Microsoft ended support for its older OS on Oct. 14, but there are three ways to extend critical security updates and remain on Windows 10 for another year. Two options are free.