Overview

• Valve set January 1, 2026 as the cutoff for Steam on 32‑bit Windows, affecting about 0.01% of users per the Steam Hardware Survey.
• Steam will continue to support 64‑bit versions of Windows 10 and Windows 11.
• Games built for 32‑bit architectures will still run on supported systems.
• Existing Steam installations on Windows 10 32‑bit are expected to keep working for now but will receive no updates, including security fixes.
• Valve cites reliance on system drivers and libraries unavailable on 32‑bit Windows, and says future Steam releases will be 64‑bit only.