How to Repair Steam Error Code 51 – ‘Game Failed to Start’ in Windows PC

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  • The lack of Microsoft Visual C++ Redistributable can also cause this error.
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Steam error code 51 is a common error that occurs when you launch a game through Steam along with an error message “Game failed to start”. It is common to experience this issue when you use an outdated version of Steam and an outdated game. This error most commonly occurs on your PC when you use an outdated version of Steam and an outdated game. Our guide helps you fix the discussed issue, so you don’t have to worry about it anymore!

After a year or so, I tried to play Stellaris again, but I get the launching the game failed triangle. Trying these fixes (Steam, Windows 7, Game Version 2.8.1), reinstalling, cleaning reinstalling, launching Borderless Fullscreen and Windowed, launching with and without mods and updating my NVIDIA driver didn’t work. HoI4 and EU4 work, but Stellaris doesn’t.

This error occurs when your Steam account is infected with a malicious program, which interferes with the game files on your computer, preventing it from running.

So I bought my game on steam. Soon after I installed it, I starred it.

You are in the right place to find a solution to the Steam 51 error code problem if you try to run a Steam game on your Windows 10/11 computer. I have put together a simple guide to help you fix your problem.

What causes Steam error code 51?

  • The Steam client configuration files may also be corrupted, causing this error.
  • Similarly, this error can occur if the Visual C++ Redistributable package isn’t installed.
  • Corruption or missing game files can result in this error, preventing the game from launching.
  • Conflicts with third-party applications may also cause this error. Your antivirus program, for example, may block Steam processes.

How to fix the Steam 51 error code?

Updated: March 2024

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Applications from third parties should be uninstalled

  1. Type “Appwiz.CPL” in the dialogue box after pressing Windows + R.
  2. Navigate through all the apps in the App Manager to locate any that seem to be conflicting with Steam.
  3. Select Uninstall from the right-click menu when you locate the application.
  4. Reboot your computer and see if the error message has been fixed.

Update the video card driver

  1. To access the dialog box, press Windows + R and type “devmgmt.msc”.
  2. Select Update driver by right-clicking on the graphics hardware in Device Manager’s Display Adapters category.
  3. In order to update the drivers automatically, using Windows Update is the best option. If you want to do it manually, go to the manufacturer’s website after downloading the file and choose the second option.
  4. The error message should be fixed after restarting the game after installing the drivers.

Check the integrity of the game files

  1. On Steam’s top bar, click Games.
  2. Then, right-click A. Black and choose Properties from the left column.
  3. Check the integrity of game files by navigating to Properties > Local Files.
  4. The process will now be completed.
  5. L.A. Noire should be restarted after the computer has been restarted.
  6. Test the game’s launch to ensure it works correctly.

RECOMMENATION: Click here for help with Windows errors.

Frequently Asked Questions

  1. Update your Steam files.
  2. Disable your antivirus.
  3. Update the graphics drivers.
  4. Remove any conflicting third-party applications.
  5. Install DirectX and Microsoft Visual C++ Redistributable manually.
  6. Reconfigure the game.
  7. Check the integrity of the game files.

Users get an error code 51 with the message "The game could not be launched" when trying to run a game installed through the Steam game engine. This is a common problem that usually means there is an external problem preventing the game from launching.

  1. Make sure your connection is working.
  2. Activate Steam through the Windows firewall.
  3. Reinstall Steam.

There is a report that some COD: Warzone players are experiencing freezes on Rebirth Island during loadout, as well as lagging during loadout. Read more here.

Try to add LD_PRELOAD=~/.local/share/Steam/ubuntu12_32/steam-runtime/amd64/usr/lib/i386-linux-gnu/ %command% to the launch options in Library->The Witcher 2: Assassins of Kings->Properties->General->Set launch options….

There is a message saying that the game can’t be started (error code 51) whenever I try to start up the game.

There is usually an interference from a firewall program when Steam Error code 51 appears.

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Mark Ginter is a tech blogger with a passion for all things gadgets and gizmos. A self-proclaimed "geek", Mark has been blogging about technology for over 15 years. His blog,, covers a wide range of topics including new product releases, industry news, and tips and tricks for getting the most out of your devices. If you're looking for someone who can keep you up-to-date with all the latest tech news and developments, then be sure to follow him over at Microsoft.