The Final Countdown: Valve Moves Steam to 64-Bit and Sets January 2026 Cutoff

Valve previously announced that the Steam client would undergo a full transition to 64-bit, with the 32-bit version gradually phased out. Going forward, new Steam client releases will support only 64-bit editions of Windows 10 and Windows 11. Users still running 32-bit Windows 10 will no longer be eligible for updates.

That transition is now largely complete. In a recent client update notice, Valve confirmed that all Steam builds for Windows 10 and Windows 11 are now 64-bit. Users on 32-bit Windows systems will continue to receive updates only until January 1, 2026. For those already running 64-bit Windows 10 or Windows 11, nothing changes: the client will function as usual, and even users who previously had a 32-bit Steam installation will be automatically upgraded to the 64-bit client through the normal update process.

However, users on 32-bit Windows 10 will stop receiving updates entirely after January 1, 2026. From that point onward, even critical bugs or security issues may remain unpatched.

Existing users will still be able to run the 32-bit Steam client for some time, but as the platform evolves, bugs are likely to accumulate and an increasing number of games will require a 64-bit environment. In such cases, the 32-bit Steam client may no longer function reliably. Crucially, this assumes the operating system itself is 64-bit. If the system is running 32-bit Windows 10, it cannot run the x64 Steam client at all, making an operating system upgrade mandatory.

Because of architectural limitations, a 32-bit edition of Windows cannot be upgraded in place to 64-bit. Users must first back up their data, then perform a clean installation of Windows 10 64-bit. Afterward, they may also upgrade to Windows 11, which is available exclusively in 64-bit form. Users on 32-bit Windows 10 cannot upgrade directly to Windows 11 under any circumstances.

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