Most of your older Windows apps should just work on Windows 10. If they worked on Windows 7, they’ll almost certainly work on Windows 10. Some older PC applications won’t just work, but there are many ways to get them working again. These tricks cover a variety of applications, from Windows XP-era apps and old PC games that require outdated DRM to DOS and Windows 3.1 applications.
Read the article over at How to Geek over here.