Octopus1348, 1 year ago

This is the actual reason. Steam officially said that: help.steampowered.com/en/…/4784-4F2B-1321-800A

This change is required as core features in Steam rely on an embedded version of Google Chrome, which no longer functions on older versions of Windows. In addition, future versions of Steam will require Windows feature and security updates only present in Windows 10 and above.