Steam will drop support for the last 32-bit Windows systems in January 2026
Briefly

Steam will drop support for the last 32-bit Windows systems in January 2026
"According to Steam Hardware Survey data from August, usage of the 32-bit version of Windows 10 (and any other 32-bit version of Windows) is so small that it's lumped in with "other" on the page that tracks Windows version usage. All "other" versions of Windows combined represent roughly 0.05 percent of all Steam users. The 64-bit version of Windows 10 still runs on just over a third of all Steam-using Windows PCs, while the 64-bit version of Windows 11 accounts for just under two-thirds."
"That leaves only the 32-bit version of Windows 10, which is old enough that it will stop getting security updates in either October 2025 or October 2026, depending on how you count it. The change to the Steam client shouldn't have any effects on game availability or compatibility. Any older 32-bit games that you can currently run in 64-bit versions of Windows will continue to work fine because, unlike modern macOS versions, new 64-bit versions of Windows still maintain compatibility with most 32-bit apps."
Steam will end support for 32-bit versions of Windows. 32-bit Windows usage on Steam is essentially negligible, with all such versions grouped under "other" and representing roughly 0.05 percent of users. The 64-bit version of Windows 10 still runs on just over a third of Windows Steam PCs, while 64-bit Windows 11 comprises just under two-thirds. Valve removed Steam support for Windows 7 and 8 earlier, and Windows 11 did not ship a 32-bit build. The 32-bit Windows 10 edition will stop receiving security updates in October 2025 or October 2026. Game availability and 32-bit game compatibility on 64-bit Windows remain unaffected.
Read at Ars Technica
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