Marvel Rivals Won't Launch - Steam Says Playing? Fix

Your Marvel Rivals launcher is flashing and closing, or the game is stuck in your Task Manager despite Steam saying you are in-game. This usually happens because a previous failed launch attempt left a background process hanging, or the game's executable needs higher system permissions to bypass a conflict.

Why this happens

The game often fails to initialize if a 'Bootstrap' process is already hung in memory or if your local installation files were corrupted during a recent update.

What you'll need

You just need access to your Steam library and basic Windows administrative rights to modify the game's compatibility settings.

Steps

1. 01
   Right-click the Windows Start icon, open 'Task Manager', type 'marvel' into the search bar, and select 'End Task' on every instance of 'Marvel Rivals' or 'Bootstrap' you see.
2. 02
   Open your Steam Library, right-click 'Marvel Rivals', select 'Properties', navigate to 'Installed Files', and click 'Verify integrity of game files' to repair any corrupted data.
3. 03
   Inside the same 'Installed Files' menu, click 'Browse', navigate to the 'Marvel' folder, find the 'MarvelRivals.exe' file, right-click it, and select 'Properties'.
4. 04
   Under the 'Compatibility' tab, check both 'Run this program as an administrator' and 'Disable full-screen optimizations', then click 'Apply' and 'OK'.
5. 05
   If you use Discord or NVIDIA GeForce Experience, open their respective settings menus and disable the 'In-Game Overlay' or 'Game Overlay' features, as these often conflict with the game's initialization.

Still not working?

If the game still fails to launch, check your Event Viewer under 'Windows Logs' -> 'Application' for any 'Application Error' entries tagged with 'MarvelRivals.exe'. If you see '0xc0000005' or similar access violations, your antivirus may be blocking the executable; try adding an exclusion for the game folder. If these steps do not resolve it, you may be experiencing a driver conflict with your GPU, and a clean install of your graphics drivers is the next logical troubleshooting step.

Frequently asked questions

Will these steps delete my save data or settings?

No, these steps only modify how Windows handles the game's launch process and verifies the integrity of existing files; your account data and settings remain untouched.

Why does the game keep breaking after updates?

Updates frequently change core game files, and if the download is interrupted or a file fails to overwrite correctly, the integrity check is required to fix the mismatch.

Do I really need to disable the Discord overlay?

Yes, overlays inject code into the game process as it launches. Since Marvel Rivals uses strict anti-cheat and security measures, this injection is often flagged as unauthorized, causing the game to close immediately.