As of January 1, 2026, Steam will stop supporting systems running 32-bit versions of Windows. Windows 10 32-bit is the only 32-bit version that is currently supported by Steam and is only in use on 0.01% of systems reported through the Steam Hardware Survey. Windows 10 64-bit will still be supported...
That’s not strictly true. They’re dropping certain features of 32-bit but not dropping 32-bit entirely.