How to Verify Game Files on Steam, Epic & More (2026)

To verify game files on Steam, right-click the game in your Library, select Properties, click Installed Files, then hit “Verify integrity of game files.” This takes 2 to 15 minutes and fixes corrupted or missing files without re-downloading the entire game. The process works the same way across every major PC launcher – Steam, Epic Games, GOG, Battle.net, EA App, and Ubisoft Connect all have built-in verification tools. This guide covers the exact steps for each one, plus when verification alone will not fix the problem. For a broader overview, see our gaming PC fix guide.

What File Verification Actually Does

Every game launcher keeps a manifest – a list of every file that should exist in a game’s install folder, along with each file’s expected hash (a fingerprint of its contents). When you run verification, the launcher reads each installed file, calculates its hash, and compares that hash against the manifest.

If a file’s hash does not match, the launcher downloads a fresh copy of just that file. If a file is missing entirely, it gets re-downloaded too. Files that pass the hash check stay untouched.

This is why verification is fast. A 100GB game might only need to re-download 200MB of corrupted data instead of the whole thing. Your saves, screenshots, and custom configs stored outside the game folder are not affected.

When Verification Fixes the Problem

• Game crashes to desktop on launch or during loading screens
• Missing textures, invisible models, or black/pink surfaces
• Audio cuts out or plays the wrong sound effects
• “File not found” or “missing DLL” errors on startup
• Game freezes at the same point every time (corrupted level data)
• Update failed or was interrupted by a crash or power outage

When Verification Will NOT Fix the Problem

• Low FPS or stuttering (that is a hardware, driver, or settings issue)
• Online connection errors or high ping
• Game runs fine but you get banned or kicked from servers
• Controller not detected (driver or configuration issue)
• Game launches but settings keep resetting (config file in AppData, not game folder)

How to Verify Game Files on Steam

Steam’s verification tool is the fastest among major launchers because Valve caches file manifests locally.

1. Open Steam and go to your Library.
2. Right-click the game you want to verify.
3. Select Properties.
4. Click the Installed Files tab in the left sidebar.
5. Click Verify integrity of game files.
6. Wait for the progress bar to complete.

Steam will report how many files (if any) failed validation and were re-acquired. If it says “All files successfully validated,” your game files are clean and the issue is something else – drivers, runtimes, or a settings conflict.

One quirk: some games intentionally modify local files (config files, shader caches). Steam may report “1 file failed to validate” after every check for these games. That is normal and not a sign of corruption.

Steam Verify Shortcut (Fewer Clicks)

If you want to skip the Properties menu, you can also reach verification through the gear icon on the game’s Library page. Click the gear icon (top right of the game page) and look for Manage > Verify integrity of game files. Same result, slightly different path.

How to Verify Game Files on Epic Games Store

Epic’s verification is a bit slower than Steam’s. The scan itself takes longer, and Epic re-downloads larger chunks when it finds problems. But the end result is the same.

1. Open the Epic Games Launcher.
2. Go to your Library.
3. Find the game and click the three dots (…) on its tile.
4. Select Manage.
5. Click the Verify button.

Epic does not tell you how many files it replaced. The progress bar fills up, and if corruption is found, it re-downloads the damaged portions silently. No detailed report like Steam gives you.

If verification finishes but the game still will not launch, check the game’s install folder for an Engine/Binaries subfolder. Some Unreal Engine games need their internal redistributables reinstalled – look for a setup.exe or prerequisites installer inside the game folder and run it manually.

How to Verify Game Files on GOG Galaxy

GOG Galaxy handles verification differently because GOG games are DRM-free. The launcher checks file integrity but also lets you play without it installed – which means you can also verify manually by comparing files against GOG’s offline backups.

1. Open GOG Galaxy.
2. Select the game from your library.
3. Click the settings icon (gear/cog) next to the Play button.
4. Select Manage installation.
5. Click Verify / Repair.

GOG’s repair tool is thorough. It checks every file and can also fix broken registry entries and shortcuts that GOG creates during installation. This makes it the best verification tool for older games that depend on registry keys to run.

How to Verify Game Files on Battle.net

Battle.net calls it “Scan and Repair” instead of “Verify,” but it does the same thing. This works for all Blizzard and Activision titles – Diablo IV, Overwatch 2, Call of Duty, World of Warcraft, and Starcraft II.

1. Open Battle.net.
2. Select the game from the left sidebar.
3. Click the gear icon next to the Play/Install button.
4. Select Scan and Repair.
5. Click Begin Scan when prompted.

Battle.net’s scan runs in two passes. The first checks the game’s data archives (large .CASC or .idx files). The second verifies individual assets. Blizzard games use a container-based file system, so even small corruption can require re-downloading a multi-gigabyte archive chunk. Do not be alarmed if it needs to download 5 to 10GB for what seems like a minor issue.

How to Verify Game Files on EA App

EA renamed Origin to the EA App in 2022, and the verification process changed with it. The new app calls it “Repair” rather than “Verify.”

1. Open the EA App.
2. Go to My Collection.
3. Find the game and click the three dots on its tile.
4. Select Repair.

The EA App does not show you what it fixed. The repair process runs, and either the game works afterward or it does not. If repair fails, try clearing the EA App cache: close the app completely, navigate to %LocalAppData%Electronic ArtsEA Desktop, and delete the cache folder. Restart the app and try again.

One thing to know about EA’s launcher: games purchased through Steam that require the EA App (like Battlefield or FIFA) can have file conflicts between the two launchers. If you own an EA game on Steam, verify through Steam first. Only use the EA App’s repair if Steam’s verification does not help.

How to Verify Game Files on Ubisoft Connect

Ubisoft Connect (formerly Uplay) has one of the more buried verification options. It is not on the main game tile – you need to go into the game’s properties page.

1. Open Ubisoft Connect.
2. Go to the Games tab.
3. Select the game you want to verify.
4. Click Properties in the left panel.
5. Under Local files, click Verify files.

Ubisoft Connect provides a detailed report after verification finishes. It lists how many files were checked, how many failed, and how many were repaired. This is useful because Ubisoft games tend to have large DLC packs that can corrupt independently from the base game.

If you bought a Ubisoft game through Steam or Epic, the game still runs through Ubisoft Connect in the background. You can verify through either launcher, but verifying through Ubisoft Connect directly is more thorough because it also checks Ubisoft’s DRM and cloud save components.

How to Verify Game Files on Xbox App (Game Pass)

Xbox Game Pass PC games use Microsoft’s UWP packaging, which makes verification more complicated than other launchers. The files are encrypted and stored in a protected WindowsApps folder.

1. Open the Xbox app.
2. Go to My Library.
3. Click the three dots next to the game.
4. Select Manage.
5. Click the Files tab.
6. Click Verify and repair.

Xbox verification is the slowest of all launchers because UWP packages need to be decrypted before the hash check can run. A 50GB game that takes 3 minutes to verify on Steam may take 15 to 20 minutes through the Xbox app. There is no way around this.

If verification does not fix the problem, Game Pass games sometimes need a full reset: Settings > Apps > Installed apps > find the game > Advanced options > Reset. This wipes all local data including saves not synced to Xbox Cloud, so check your cloud save status first.

When Verification Fails – What to Do Next

Sometimes verification finds no issues, but the game still does not work. Other times, the same files keep failing validation every time you run the check. Here is what each situation means and how to handle it.

Verification Finds Nothing Wrong but the Game Still Crashes

The game files are fine – the problem is outside the game folder. Check these in order:

1. GPU drivers – Download the latest from nvidia.com or amd.com. Use DDU for a clean install if a standard update does not help.
2. Visual C++ Redistributable – Install the 2015-2022 version (both x64 and x86) from Microsoft. Many games silently fail without the right runtime.
3. DirectX – Look for a _CommonRedist folder inside the game’s install directory. Run the DirectX setup inside it.
4. Windows updates – Some game patches require recent Windows builds. Check for pending updates in Settings > Windows Update.

The Same Files Keep Failing Every Time

If verification reports corrupted files, re-downloads them, and then reports the same files corrupted again on the next check – your storage drive may be failing. Corrupted data that keeps reappearing after being replaced points to bad sectors or a dying drive.

Run CrystalDiskInfo (free) to check your drive’s health status. Look for “Reallocated Sectors Count” or “Current Pending Sector Count” – anything above zero is a warning sign. If the drive shows “Caution” or “Bad” status, back up your data and replace the drive.

Verification Gets Stuck or Takes Forever

A verification process that hangs at a specific percentage usually means the launcher is struggling to read a file on disk. This happens with fragmented mechanical hard drives or drives under heavy load from other programs. Close background applications (especially other downloads or disk-heavy tasks) and try again. On an HDD, running Windows Disk Defragmenter before verification can speed things up.

Pro Tips for File Verification

• Mod users: Verification will delete or overwrite modified game files. If you use mods, back up your mod files before verifying. After verification, reinstall your mods.
• Multiple Steam libraries: If you moved a game between drives, make sure the Steam Library folder on the new drive is added in Steam > Settings > Storage. Verification only works if Steam knows where the files are.
• Slow internet? Verification itself runs locally – it only downloads files that fail the check. A slow connection only matters if many files need replacing.
• Cloud saves as backup: Before drastic troubleshooting steps like reinstalling, make sure Steam Cloud (or the equivalent) is synced. Check the game’s properties for cloud save status.
• Post-update crashes: If a game crashes right after an update, verify before doing anything else. Interrupted or corrupted patches are the most common cause of post-update problems.

Which Fix Should You Try First?

Stop running through solutions randomly. Here is the decision path based on your specific situation:

If one game crashes but all others work fine – Verify that game’s files. This is a file corruption problem 80% of the time. If verification finds nothing, delete the game’s config folder in Documents or AppData and relaunch.

If every game crashes or fails to launch – Skip verification entirely. The issue is system-wide: outdated GPU drivers, missing Visual C++ Redistributables, or antivirus interference. Start with GPU drivers (DDU clean install), then reinstall Visual C++ 2015-2022.

If a game broke after an update – Verify files immediately. Interrupted or corrupted patches are the number one cause of post-update crashes. Verification replaces only the damaged files without re-downloading the entire game.

If textures are missing or the screen is glitched – Verify files, then clear your shader cache. On NVIDIA: NVIDIA Control Panel > Manage 3D Settings > look for Shader Cache Size and toggle it off then on. On AMD: AMD Software > Graphics > Advanced > Reset Shader Cache.

If the same files keep failing validation – Your storage drive is the problem, not the game. Run CrystalDiskInfo. If the drive shows anything other than “Good” status, back up your games and replace it. An SSD with worn-out NAND cells or an HDD with bad sectors will corrupt data faster than any launcher can repair it.

Common Mistakes When Verifying Game Files

2026 update: Gaming hardware evolves quickly. For the latest recommendations across mice, keyboards, monitors, and more, browse our interactive tools and hardware databases which are updated regularly with new releases and price changes.

Frequently Asked Questions

How long does verifying game files take on Steam?

Between 2 and 15 minutes depending on game size and drive speed. A 50GB game on an NVMe SSD finishes in about 3 minutes. The same game on a mechanical hard drive can take 10 to 15 minutes. Internet speed only matters if damaged files need re-downloading – the hash-checking runs entirely on your local drive.

Does verifying game files delete my save data?

No. Verification only touches files inside the game’s install folder. Most games store saves in Documents, AppData, or Steam Cloud – all separate locations. The only risk is with older games that keep saves inside the install directory, and even then, verification only replaces files that do not match the expected hash.

Why does Steam say files failed to validate and will be reacquired?

Steam found files that do not match its server manifest and is re-downloading them. Common causes: interrupted updates, power outages, hard drive errors, or antivirus quarantining game files. If the same files fail repeatedly after re-acquisition, run CrystalDiskInfo to check your drive health – bad sectors corrupt data faster than Steam can replace it.

Can I verify game files on Xbox Game Pass PC?

Yes. Open the Xbox app, go to My Library, click the three dots on the game, select Manage, then use the Files tab to Verify and repair. It takes longer than other launchers because Game Pass uses encrypted UWP packages that need decryption before hash verification can run.

Should I verify game files after every update?

No. Game updates already include integrity checks during the patching process. Only verify when something goes wrong – crashes, missing textures, black screens, or launch failures. Running verification after every update wastes time and adds unnecessary read cycles to your storage drive.