Troubleshooting Steam Error Code 51: A Complete Guide

By Hasi Last updated May 1, 2023

Steam is a popular digital game distribution platform that allows gamers to download, install and play their favourite games on their PC. However, sometimes users may encounter an error code 51 while launching their games on Steam. This error can be frustrating as it prevents users from playing their favourite games. In this article, we will explore what Steam error code 51 is and how to fix it.

What is Steam Error Code 51?

Steam error code 51 is a common error that occurs when users try to launch their games on Steam. The error message usually says, “Failed to start game (app already running)” or “Game failed to start (error code 51).” This error can occur due to a variety of reasons, including corrupted game files, outdated drivers, conflicting software, or antivirus software blocking the game.

Steam Error Code 51: What It Is and How to Resolve It

How to Fix Steam Error Code 51?

Here are some methods you can try to fix Steam error code 51:

Restart Your PC

The first thing you should try is to restart your PC. This can help fix any temporary issues that may be causing the error. To do this, click on the Start menu and select the Restart option. Once your PC restarts, try launching the game on Steam again to see if the error is resolved.

Verify Game Files

If restarting your PC does not fix the issue, the next thing you should do is verify the game files on Steam. This will ensure that all the game files are intact and not corrupted. To do this, follow these steps:

Open Steam and go to your Library.
Right-click on the game that is giving you the error and select Properties.
Click on the Local Files tab and then click on Verify Integrity of Game Files.
Wait for Steam to verify the game files. This may take a few minutes depending on the size of the game.

Once the verification process is complete, try launching the game on Steam again to see if the error is resolved.

Update Your Drivers

Outdated drivers can sometimes cause Steam error code 51. To fix this, you should update your drivers to the latest version. You can update your drivers manually or use a driver updater tool to automate the process.

To update your drivers manually, follow these steps:

Press the Windows key + X and select Device Manager.
Expand the category for the device you want to update.
Right-click on the device and select Update Driver.
Follow the on-screen instructions to update the driver.

Alternatively, you can use a driver updater tool like Driver Booster to update all your drivers automatically.

Disable Conflicting Software

Sometimes, conflicting software can cause Steam error code 51. To fix this, you should disable any software that may be conflicting with the game. This includes antivirus software, firewalls, and other security software.

To disable your antivirus software temporarily, follow these steps:

Right-click on the antivirus software icon in your system tray and select Disable.
Try launching the game on Steam again to see if the error is resolved.

Reinstall the Game

If none of the above methods works, you may need to reinstall the game. This will ensure that all the game files are fresh and not corrupted. To reinstall the game, follow these steps:

Open Steam and go to your Library.
Right-click on the game that is giving you the error and select Uninstall.
Once the game is uninstalled, go to the Store and search for the game

Conclusion

Steam error code 51 can be a frustrating issue for gamers, but fortunately, there are several methods to fix it. Restarting your PC, verifying game files, updating your drivers, disabling conflicting software, and reinstalling the game are all effective ways to troubleshoot the error. By following the steps outlined in this article, you should be able to resolve the issue and get back to enjoying your favorite games on Steam. Remember to always keep your system updated and maintain good security practices to avoid encountering issues like this in the future.

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F.A.Qs

here are some frequently asked questions (FAQs) about Steam error code 51:

What causes Steam error code 51?

Steam error code 51 can be caused by a variety of reasons, including corrupted game files, outdated drivers, conflicting software, or antivirus software blocking the game.

How do I fix Steam error code 51?

You can try several methods to fix Steam error code 51, including restarting your PC, verifying game files, updating your drivers, disabling conflicting software, and reinstalling the game.

What should I do if the Steam error code 51 persists?

If the error persists, you can try contacting Steam support for further assistance. They may be able to provide additional troubleshooting steps or help you resolve the issue.

Can Steam error code 51 be prevented?

While it’s not always possible to prevent Steam error code 51, you can take some preventive measures, such as keeping your system and drivers up to date, disabling conflicting software, and regularly scanning your system for malware and viruses.

Does Steam error code 51 affect all games?

No, Steam error code 51 can occur with specific games or applications on Steam, and not all games are affected. However, if you encounter the error with one game, it’s possible that it could occur with other games as well.