Fix An Error Occurred When Starting The Game

Recently players have been unable to launch Warzone from the Blizzard client due to an error message. When attempting to launch Call of Duty: Warzone, error message appears “An error occurred while starting the game. Please check for updates or scan and repair to fix this problem.” is shown to the players.

This issue can occur when the game doesn't have enough permissions to launch properly. However, according to user reports, the error message started appearing after they updated their game, so it could also indicate a bug in the game. Regardless of the cause, in this article, we'll show you how to resolve the error message in question, so keep reading.

How to resolve the error an error has occurred when starting the game?

It turns out there are several ways to resolve the error An error occurred while starting the game. While this may suggest that the issue is caused by a number of things, we wouldn’t be so sure. This is mainly because the problem started for many users after updating their game. Regardless of that, it’s important that we mention the different things that are reportedly causing the problem for different users so you can see if it relates to one of them as well.

First of all, insufficient permissions can cause the issue in question, in which case you will have to run the game as an administrator. On top of that, the problem also seems to be related to the launcher only for most users.

This means that they can launch the game properly without using the dedicated launcher. Then again, for some users, having launch options seems to have triggered the issue at hand, so that's something to keep in mind as well. With that said, let's get started and show you the different methods you can use to resolve the issue at hand.

Run Warzone as administrator

The first thing you should do when you encounter the error message an error has occurred while starting the game is to run the game as administrator. In many cases, games on your system fail to start when a third party interferes with them or when a third-party process in the background prevents them from starting, such as your antivirus. In some cases, these processes can also cause Warzone crash.

On top of that, in the case of Warzone, many users have reported that they were able to launch the game without any issues when they didn't use the game's dedicated launcher. This means that you can launch the game directly from the installation directory without the launcher. Similarly, you can run it as administrator to prevent any background processes from interfering with it. To do this the right way, I recommend that you follow the instructions that we will describe here:

• First, open the Blizzard client and navigate to war zone.
• Click on the gear wheel icon located next to the Play button.

• In the menu that appears, choose the option Show in Explorer.

• This will open a File Explorer window. Now, you need to open the folder called Call of Duty Modern Warfare.
• In the folder, find the file ModernWarfare.exe. Do not use the Modern Warfare Launcher file as it will not work.
• Right click on ModernWarfare.exe and, in the menu that appears, choose the option Run as administrator provided.

• See if that launches the game for you.

Change the game region

It turns out that another thing you can do to resolve the issue at hand is to change the region of your game. Many users have reported that after encountering the error message in question, they were able to resolve the issue by changing the region of the game. By changing the region, they received a new update after which the game was able to launch without any issues.

Therefore, you should also try changing the server region to see if that works for you. To do this, follow the instructions we show you right now:

• To start, open the client Battle.net on your system and then navigate to Warzone.
• Then, to change your region, click on the globe icon which is provided above the Play button.

• Once you've changed your region, see if that resolves the error an error occurred when starting the game.

Remove launch options

In case the problem persists even after following the above two methods, the problem might be caused by the startup options you provided. The launch options or command line arguments commands allow you to change the behavior or some features of the game. While this may help in some cases, having startup options seems to be causing the error message in question for different users.

So, if this case is applicable to you, go ahead and remove your startup options to see if that fixes the problem for you. To do this, you have to follow each of the instructions that we will give you right away:

• First, start the client. Battle.net on your PC and switch to the tab Warzone.
• There, next to the Play button, you need to click on the gear icon provided.

• In the menu, choose the option Configuration of the game.

• Once you are there, in Additional command line arguments, make sure the bar provided is empty.

• Alternatively, you can simply uncheck the checkbox Additional command line arguments.
• Once you have done that, click on the Done button provided and then try to launch the game.
• See if that fixes the problem for you.

Delete cache files

It turns out that another way to fix the error message in question is to clear the cache of the Blizzard client on your system. The cache is basically Temporary files which store basic information about how you use the app on your PC to make the experience faster. In some cases, when the cache files are corrupted, different problems can occur.

So, in such a scenario, you will have to clear the cache files and this is quite safe as they are temporary files anyway. The files will be generated again after you start the client again. To clear the cache files, follow the instructions below:

• First, close the Blizzard client on your PC.
• Then, open the Run dialog box by pressing the key Windows + R on your keyboard.
• In the dialog box Run, writes %localappdata% and then press the key Intro.
• There, look for the folders of Battle.net o Blizzard Entertainment. Once you find them, go ahead and delete them.
• After you're done, relaunch the Battle.net client to see if the issue persists.

Change game folders

Finally, if none of the above methods have fixed the problem, then as a last resort, you will have to change the game's installation directory. This has been reported by different users who were able to resolve the issue themselves by changing the game's directory on their systems.

So, if this case is applicable to you, you can go ahead and change the installation directory of the game on your PC and then see if the error message still appears.