How to Verify Game Files in Steam and Repair a Broken Game
- When does it help to verify game files?
- Video tutorial
- Step by step: verify game files in Steam
- Why verifying beats a full reinstall
- Steam keeps flagging the same files: is that a problem?
- When the repair doesn't help: next steps
- Quick reference: which fix for which problem
- FAQ: verify game files in Steam
- Conclusion
A Steam game won't launch anymore, keeps crashing or throws errors? Before you reinstall the whole thing, try the faster fix: Steam can verify game files and repair them on its own. This guide shows you how to verify game files in Steam step by step.
When does it help to verify game files?
- The game won't start anymore
- Errors after installing a mod
- The game crashes regularly
- Connecting to game servers fails
- Saves or items are suddenly missing
Important: the Steam verify function repairs damaged game files. It won't fix network problems or server errors.
Video tutorial
This video walks through the whole process using ARK as the example. The commentary is in German, but the clicks are easy to follow:
Step by step: verify game files in Steam
Step 1 โ Open Steam and go to your Library.
Step 2 โ Right-click the affected game and choose Properties.
Step 3 โ Select the Installed Files tab (older Steam versions called it Local Files).
Step 4 โ Click Verify integrity of game files.
Step 5 โ Steam checks every file and automatically downloads anything that's missing or damaged. Depending on the size of the game, this takes a few minutes.
Why verifying beats a full reinstall
A full reinstall means downloading the entire game again, which can take hours on a slow connection. When you verify game files, Steam only downloads the damaged ones again, so it's a lot faster.
Steam keeps flagging the same files: is that a problem?
If every verification run downloads one or two files again, that's usually nothing to worry about. Steam re-validates certain config and platform files on every check. That's normal behavior and not a sign of real damage. It only gets serious when lots of files are reported as damaged again and again. Then the cause usually goes deeper, for example a failing drive or a program that interferes.
When the repair doesn't help: next steps
If verifying the game files in Steam doesn't fix it, work through these points in order:
- Clear the download cache: Steam โ Settings โ Downloads โ Clear Download Cache. Log in again afterwards. This fixes many update and loading errors.
- Check your drive: bad sectors can damage files over and over. On Windows, run a drive check (right-click the drive โ Properties โ Tools โ Check, or use
chkdsk). - Run Steam as administrator: without write permissions, repaired files sometimes don't get saved.
- Remove mods: if the problems started after installing a mod, disable your mods first. The Steam verify check replaces modified files with the originals, which can break mods.
- Check antivirus and firewall: add the Steam folder and the game folder as exceptions in case a security program is blocking files.
- Move the game to another drive: Properties โ Installed Files โ Move install folder. This helps when one specific drive is causing trouble.
If none of that works, a full reinstall is the last step, and a reliable one.
Quick reference: which fix for which problem
Here's everything from this guide in one table, so you can jump straight to the right fix.
| Problem | What to try | Note |
|---|---|---|
| Game won't start or crashes regularly | Verify game files in Steam | Only re-downloads damaged or missing files |
| Errors after installing a mod | Disable mods first, then verify game files | Verifying replaces modified files with the originals |
| Update or loading errors in Steam | Clear Download Cache, then log in again | Fixes many update and loading errors |
| Lots of files flagged as damaged every time | Check the drive, check antivirus exceptions | Bad sectors or a blocking program can damage files again and again |
| One drive keeps causing trouble | Move install folder to another drive | Properties โ Installed Files |
| Can't connect to servers, network errors | Verifying won't help here | It only repairs damaged game files |
| Nothing else worked | Full reinstall | Last step, but reliable |
FAQ: verify game files in Steam
When does it help to verify game files in Steam?
When a game won't start anymore, shows errors after a mod install, crashes regularly, can't connect to game servers, or when saves or items suddenly go missing.
How do I verify and repair a Steam game?
In your Steam Library, right-click the game, open Properties, pick the Installed Files tab (formerly Local Files) and click Verify integrity of game files. Steam downloads missing or damaged files automatically.
Is verifying better than reinstalling?
Most of the time, yes. It only downloads the damaged files instead of the whole game, so it's much faster.
Does the repair fix network problems too?
No. It only repairs damaged game files. Network problems and server errors aren't affected.
By the way: if you're wondering which Steam building games are worth it right now, check out our comparison of Space Engineers 2, SpaceCraft and Planet Crafter.
Conclusion
When a game acts up, the first thing to do is verify game files in Steam. It's quick, simple and often does the trick. Good luck! ๐ฎ
Popular guides on banrado: The Planet Crafter beginner's guide and Dune: Awakening single player guide.
As of October 2026. Menu names as they appear in the English Steam client.
