Players need to upgrade to a newer operating system.
At the end of last year, Valve announced the end of support for operating systems for the Steam digital store. Windows 7, Windows 8 and Windows 8.1. Despite this move, Steam could still be used on these systems to a limited extent.
However, the situation is changing with the arrival of a recently released update that can no longer be downloaded on the mentioned operating systems. In practice, this is the final end of Steam on older versions of Windows, whose users will you will have to update to a newer version or the current version of the macOS or Linux operating systems running Steam.
Valve later clarified that in addition to Windows 7, Windows 8 and Windows 8.1, support for macOS 10.13 and 10.14 has also been officially discontinued.
Source : Zing
