How Do You Fix Marvel Rivals Unknown Login Error Code 5?

Let’s fix this issue step by step. It’s not as tricky as it seems. Follow along, and we’ll get you back in the game.

Solution 1: Verify Game Files on Steam

Sometimes, files go missing or get corrupted. Steam can help fix that. Here’s how:

1. Open Steam and find Marvel Rivals in your library.
2. Right-click on the game and select Properties.
3. Go to the Installed Files tab.
4. Click Verify Integrity of Game Files.

This process checks all the game files and replaces anything broken or missing. It might take a few minutes, so be patient. Once it’s done, try launching the game again.

Solution 2: Adjust Compatibility Settings

If verifying files doesn’t work, compatibility issues might be the problem. Let’s tweak some settings:

1. Find the game folder by clicking Browse in Steam under Installed Files.
2. Look for the file named MarvelLauncher.exe.
3. Right-click it and choose Properties.
4. Go to the Compatibility tab.
5. Check Run this program as an administrator.
6. Enable Run this program in compatibility mode for: and try Windows 8 or Windows 7 first. If those don’t work, test Vista mode as a last resort.
7. Click Apply, then hit OK.
8. Restart the game and see if it works now.

These steps usually fix Error Code 5 for most players. If it still doesn’t work, consider reinstalling the game completely or reaching out to support for help.