PC / Steam Deck · Troubleshooting
Steam: how to verify a game’s files
When a Steam game has missing content, crashes or will not launch, Steam recommends verifying its files. This page covers the desktop Steam client’s procedure, its documented limits and the scope of available Steam Deck observations.
At a glance
TimeVariable duration; not timed
DifficultyGuided settings and checks
ConsoleSteam Deck, Windows PC, ASUS ROG Ally, Lenovo Legion Go, MSI Claw, GPD Win, AYANEO Windows, OneXPlayer, Zotac Zone, Acer Nitro Blaze
SystemSteam client / SteamOS
Compatible devices
Compatible consoles
- Steam Deck
- Windows PC
- ASUS ROG Ally
- Lenovo Legion Go
- MSI Claw
- GPD Win
- AYANEO Windows
- OneXPlayer
- Zotac Zone
- Acer Nitro Blaze
The detailed procedure is documented for the desktop Steam client on Windows PC. Community observations report an equivalent route on Steam Deck LCD / OLED running SteamOS 3, but labels and controls may vary. The other listed devices are covered when Steam is installed; no model-specific procedure is added.
What you need
- No external hardware required.
Verify files from the Steam client
The official procedure below applies to the desktop Steam client. Steam recommends restarting the computer and Steam before starting; verification can then take several minutes.
- Open Steam, then the Library.
- Open the affected game’s properties.
- Go to the Installed Files tab, or its translated equivalent in your client.
- Select Verify integrity of game files, or the corresponding translated label.
- Let Steam finish checking before launching the game again.
Steam notes that verification can take several minutes. It checks the installed game files when content is missing or crashes occur; it does not guarantee that every possible cause will be resolved.
How to interpret the result
Steam explains that one or more files may fail verification without necessarily indicating a problem. These may be local configuration files that the process does not replace.
If the game then launches correctly, the check has addressed the immediate problem. If it still crashes, will not launch or remains incomplete, verification may not have addressed the cause.
Steam Deck
Community discussions report a Steam Deck route through the library, game properties and file-integrity verification. Some accounts mention the Steam and “three lines” buttons, along with the label Local Files. These observations are not a general official procedure: labels and controls can vary with the SteamOS and client versions.
If the game still will not launch
For a missing-executable error, Steam lists possible causes including a missing file, antivirus quarantine, a corrupted file or an incomplete download. After restarting, Steam recommends verifying the files.
If verification is not enough, Steam also recommends checking updates, drivers, interfering software and system compatibility. These checks are the next step if the game keeps crashing or refusing to launch.
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