Steam will stop supporting macOS 11 Big Sur on October 15, 2025, according to Valve, requiring Mac users to upgrade to macOS ...

The change kicks in on October 15th, 2025. “This change is required as core features in Steam rely on an embedded version of Google Chrome, which no longer functions on older versions of macOS,” Valve ...

Valve's Steam client will end support for macOS 11 Big Sur on October 15, 2025. This decision, while a blow to some gamers, ...

Steam will drop support for macOS 11 from October 15, pushing users to upgrade to newer macOS versions for continued access ...

From 15 October 2025, Steam will officially stop supporting macOS 11 Big Sur. This isn't just a case of Steam saying there ...

In a few weeks, the Steam Client will stop running on macOS 11 due to a Chromium compatibility limitation. Here are the details.

What Happened: Valve, the creator of Steam, confirmed via its support page that it would cease support for macOS 10.13 (High Sierra) and 10.14 (Mojave) starting Feb. 15, 2024.

Gamers with older Macs who want to keep using Steam will need to upgrade to macOS Monterey or later if they can, as Valve is cutting support for macOS Big Sur in October.

If you're a Mac user that's still running macOS 11 Big Sur, be aware: Valve has announced that the Steam Client will stop ...