Valve has put a firm date on the end of an era: beginning January 1, 2026, Steam will stop supporting 32‑bit editions of Windows — a move that is technically predictable, low‑impact for the vast majority of users, but urgent and potentially disruptive for the small cohort still running Windows 10 in 32‑bit mode.
Background
The PC ecosystem has been migrating from 32‑bit to 64‑bit for nearly two decades. Hardware, drivers, anti‑cheat modules, and browser engines have progressively...