Rust "Steam not open?" startup error: how to fix it
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Last checked
September 25, 2026
Rust shows a "Steam not open?" error at startup.
Also appears as: Steam not open?, rust steam not open, rust steam not open error, rust wont launch steam not open, rust startup error
Facepunch has a startup troubleshooting guide for this error and other common startup errors, ordered from the fix that resolves it most often to the last resort. It happens before you reach a server, so the fixes are all on your own PC.
Fix it, step by step
Close and restart Steam and Rust, then restart your computer if needed
Close Rust and Steam, then start Steam and Rust again. If that fails, restarting your computer is also suggested.
Check for Steam client updates
Update Steam: with Rust closed, choose Steam, then "Check for Steam client updates", and restart Steam if prompted.
Opt out of Steam betas
Opt out of Steam betas: with Rust closed, open Steam, then Settings, and under "Beta participation" click Change and pick "NONE - opt out". Apply any updates, restart Steam and open Rust.
Verify integrity of Rust's game files
Verify Rust's files: right-click Rust in Steam, choose Properties, open Local Files and click "Verify integrity of game files".
Delete the Rust folder and reinstall through Steam
As a last step, do a fresh install: delete the Rust folder entirely, then reinstall through Steam.
Sorted. Glad that worked.
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