Error code 10 is a widely reported login issue for the Marvel Rivals PC game. That error occurs for some players when they try to log in to Marvel Rivals. The message for this error says, “Unknown error. Error code 10.” It’s not a message that provides any notable clues for causes and fixes, which makes it harder to resolve. This is how you can fix the Marvel Rivals Unknown error code 10 on a Windows PC.
Clear the Local Configuration Files
A few players confirm they’ve fixed the Marvel Rivals Unknown error code 10 by clearing local configuration files for the game. The Marvel Rivals launcher has a Clear Local Configuration Files option for applying this possible fix. This is how you can select that option.
- Open your Epic or Steam game launcher.
- Select to open Marvel Rivals.
- Click the Clear Local Configuration Files option.
The Clear Local Configuration Files option
Run the Network Diagnostics Troubleshooters
Running Windows network diagnostic troubleshooters can potentially resolve connection issues causing the Marvel Rivals Unknown error code 10. Internet Connections and Network Adapters are two troubleshooters you can run from Settings. You can open those troubleshooters like this:
- Click on the search box (or button) within the taskbar to bring up a file finder tool.
- Enter troubleshooter to select Troubleshoot settings.
- Click Other trouble-shooters or Additional troubleshooters within Windows 11/10 Settings.
- Select the Run option for the Internet Connections troubleshooter.
The Run the troubleshooter option
- Go through the steps in the troubleshooter to apply the fixes suggested.
The Internet Connections troubleshooter
- Repeat the previous two steps for the Network Adapter troubleshooter.
Start Marvel Rivals Directly From Epic or Steam
Are you opening the Marvel Rivals launcher with a desktop shortcut or from File Explorer? If so, try starting Marvel Rivals directly from your Epic or Steam game client software. Players who’ve fixed the Marvel Rivals Unknown error code 10 confirm that opening the MR launcher directly from Epic or Steam (rather than Explorer) has worked for them. So, start the Steam or Epic Games software and select to run MR from it.
Verify Marvel Rivals’ Files
Game file corruption is a potential cause for the Marvel Rivals Unknown error code 10. To address this possible cause, run a Steam or Epic Games verification scan for the game. You can do this by going through the guidelines on these Steam support or Epic Games pages.
The Verify integrity of game files option
Try Adding Marvel Rivals to Steam (for Epic Users)
Some players who’ve installed Marvel Rivals with Epic say they’ve fixed error code 10 by adding the game to Steam. Thus, it seems error code 10 is more prevalent for Epic users. This is how you can add a Marvel Rivals game installed with Epic to Steam:
- If you don’t already have the Steam games client, you’ll need to install it. Click Install Steam on this page, and open the downloaded setup wizard to install the software.
- Click Add a Game in the bottom-left corner of Steam.
- Select the Add a Non-Steam game option.
The Add Non-Steam Game option
- Next, select the checkbox for the Marvel Rivals game shown in the list. If you don’t see it in the list, click Browse and select the Marvel Rivals EXE file from there.
- Click the Add Select Programs button.
There might not be a dead-cert way to fix Marvel Rivals Unknown error code 10 on Windows PCs. Yet, the troubleshooting methods suggested above have worked for some Marvel Rivals players who’ve fixed that gaming issue. There’s a reasonable chance one of them might also fix error code 10 on your PC.
