How to Fix Marvel Rivals Error Code

Marvel Rivals can throw a variety of error codes, from network timeouts to anti-cheat failures, that block you from playing. This guide walks you through the most common fixes in order, starting with the simplest and moving to more advanced steps. You’ll need access to your router, your PC’s settings, and possibly a VPN or DNS change.

What You’ll Need

Your Marvel Rivals login credentials (to re-verify after some fixes)
Administrator access to your PC (for firewall and anti-cheat steps)
Access to your router’s admin page (usually at 192.168.0.1 or 192.168.1.1)
Optional: a VPN client (free trial is fine) and a USB drive for a clean boot

Step-by-Step

Restart everything. Close Marvel Rivals, then restart your PC and your router/modem. Leave the router off for 30 seconds before powering it back on. This clears temporary network and client glitches that cause many error codes.
Check the official server status. Visit the Marvel Rivals official X (Twitter) account or the game’s Discord server. If servers are down or under maintenance, no local fix will work—wait and try again later.
Verify game files. In Steam, right-click Marvel Rivals, select Properties → Installed Files → Verify Integrity of Game Files. In Epic Games Launcher, click the three dots on the game tile and choose Verify. This repairs corrupted or missing files that often cause error codes on launch.
Update your graphics drivers. Outdated GPU drivers can cause crashes that appear as error codes. Go to NVIDIA GeForce Experience or AMD Adrenalin and install the latest driver. If you recently updated, try rolling back to a previous version.
Run the game as administrator. Right-click the Marvel Rivals executable (in Steam\steamapps\common\MarvelRivals or similar) and select Properties → Compatibility → Run this program as an administrator. Then launch the game from that shortcut.
Disable overlays. Turn off Steam Overlay (Steam Settings → In Game → uncheck Enable Steam Overlay), Discord Overlay, and any other overlay like MSI Afterburner or RivaTuner. Overlays frequently conflict with anti-cheat and cause error codes.
Allow the game through your firewall. Go to Windows Security → Firewall & network protection → Allow an app through firewall. Click Change settings, then Add another app, and browse to the Marvel Rivals executable. Ensure both Private and Public are checked. If it’s already listed, remove it and re-add.
Flush DNS and reset network stack. Open Command Prompt as administrator and run these commands one by one:
ipconfig /flushdns
netsh winsock reset
netsh int ip reset
Then restart your PC. This fixes many network-related error codes.
Change DNS servers. Use a public DNS like Google (8.8.8.8 and 8.8.4.4) or Cloudflare (1.1.1.1). In Windows, go to Network & Internet → Change adapter options → right-click your connection → Properties → Internet Protocol Version 4 (TCP/IPv4) → Properties → Use the following DNS server addresses. Enter the addresses and click OK.
Reinstall the anti-cheat. Navigate to the game’s installation folder (default: C:\Program Files (x86)\Steam\steamapps\common\MarvelRivals). Look for a folder named something like EasyAntiCheat or AntiCheat. Run the installer (e.g., install.bat or EasyAntiCheat_Setup.exe) and select Repair or Install. If you can’t find it, verify game files again.
Use a VPN. If you get error codes like “Connection Failed” or “Login Timeout,” your ISP may be blocking certain ports. Try connecting to a VPN server in your own country or a nearby region. If the game works with the VPN, your ISP is the problem.
Clean boot Windows. Press Win+R, type msconfig, go to Services tab, check Hide all Microsoft services, then Disable all. Restart and try the game. If it works, re-enable services in groups to find the culprit. Remember to re-enable everything later.

Common Mistakes

Skipping the restart. Many errors are temporary and a simple restart fixes them. Jumping straight to advanced steps wastes time.
Not checking server status first. If the servers are down, no local fix will work. You’ll just frustrate yourself.
Disabling the firewall entirely. That exposes your PC to threats. Instead, add the game as an exception.
Forgetting to re-enable services after a clean boot. This can leave your system in a broken state.
Using a VPN in a far-away country. This can increase ping and actually cause new errors. Choose a server close to you.

Tips

Keep your Windows OS fully updated. Some error codes are fixed by Windows patches.
Close background apps that use network bandwidth (downloads, streaming) before playing.
If you’re on Wi-Fi, try a wired Ethernet connection for a more stable signal.
Write down the exact error code and search for it on the official Marvel Rivals support page—some codes have specific meanings.
If you’re using a third-party antivirus, add the game folder to its exclusions list.

Troubleshooting

If none of the above steps work, try these additional approaches:

Reinstall the game completely. Uninstall Marvel Rivals, delete any leftover folders in Steam\steamapps\common and in %AppData% (look for MarvelRivals folders), then reinstall. This clears any deeply corrupted files.
Check for Windows updates. Go to Settings → Windows Update and install all pending updates. Restart and try again.
Test on another network. Use your phone’s mobile hotspot (with a good data plan) to see if the error persists. If it doesn’t, your home network is the issue.
Contact official support. Visit the Marvel Rivals support website and submit a ticket with your error code, a screenshot, and your system specs. They may have a fix specific to your issue.

Frequently Asked Questions

Q: What does error code “0” mean?
A: It usually means a network timeout or connection issue. Restart your router and flush DNS as described in Step 8.

Q: Why do I get an anti-cheat error even after verifying files?
A: The anti-cheat may be blocked by your antivirus or firewall. Add the game folder to exclusions and run the anti-cheat repair tool (Step 10).

Q: Can I fix the error by reinstalling the game?
A: Yes, a clean reinstall often fixes persistent corruption issues, but try the simpler steps first to save time.

Q: My error only happens in ranked matches. Why?
A: That may be a server-side issue or a temporary network spike. Check server status and make sure your connection is stable.

Q: Does using a VPN get me banned?
A: Marvel Rivals doesn’t officially ban VPN use, but it can trigger anti-cheat flags if you switch regions frequently. Use it only as a diagnostic tool.

Q: The error says “File corrupted” but verification says all files are fine.
A: Your antivirus might be quarantining a file. Temporarily disable it, verify files again, and then re-enable it. If that works, add an exclusion.

General steps for current mainstream versions; menus can differ by device and version. See the disclaimer or report an error.

More in this bed

The whole Tech How-To bed →