How to Fix Discord Fatal Javascript Error in Windows 10/11

Discord is an excellent community platform for playing your favorite games, making friends, organizing meetups, and sharing ideas with like-minded people. You can use Discord in your web browser, but if you use the Discord Windows app, you may encounter a Discord fatal JavaScript error on occasion. This error can occur for a variety of reasons, ranging from corrupted Discord configuration files to overactive antivirus software preventing it from loading. When a Discord fatal JavaScript error occurs, it is not always clear what caused it.

In this article we will teach you How to Fix the Discord Fatal Javascript Error in Windows 10/11. In most cases, however, it is caused by a corrupted Discord installation or another app or service (such as your antivirus software) that prevents it from running properly. Repairing or reinstalling the Discord app will usually solve the problem, but if another third-party app or service is causing the problem, you’ll need to dig deeper to ensure that Discord can load and run properly. If this is the case, follow the steps below to troubleshoot Discord. 

How to Fix Discord Fatal Javascript Error in Windows 10/11

Uninstall And Reinstall Discord

First and foremost, we recommend that you uninstall the program and reinstall it from the official website. There isn’t much you can do if one of the critical installation files or the installer itself is corrupted. As a result, reinstalling the software is always a faster and more noticeable way to resolve the issue.

1. To uninstall Discord, first type “Apps and Features” into the Windows 11/10 search bar.
2. You can now see a list of all programs and software that are installed on your computer.
3. Simply enter “Discord” into the search bar.
4. When you find Discord in the list, click on it to reveal the “Uninstall” option.
5. After clicking “Uninstall,” follow the on-screen instructions to uninstall the applications.
6. Now, go to “www.discord.com” and download a new installer from the website.
7. After downloading, install the program by following the instructions in the installer.

Turn Off The Antivirus

As previously stated, an antivirus scan, whether Discord or another application, can cause the fatal javascript error. It usually happens as a result of the antivirus’s real-time monitoring scans, which are constantly looking for malicious executable files. As a result, this procedure may result in the fatal javascript error in Discord.

To resolve this, restart Discord after turning off your antivirus software. You don’t have to uninstall the program completely. Almost all antivirus programs include a temporary shutdown option that disables all of their processes for the time being. From the available options, you can choose whether to kill the process for a few minutes, until the next system reboot, or permanently. The steps may differ depending on the antivirus program you are using. We recommend temporarily disabling the antivirus to determine whether it is causing the fatal javascript error.

Delete Discord AppData Folder

The AppData folder on your Windows computer stores the local data and cache of all the programs you install. So, removing a program’s folder from the AppData directory simply removes all personal user configurations and temporary files created by Discord. So, if you’ve only recently discovered the issue, it might be the best solution for you. To do so, follow the steps outlined below:

1. To open the “Run” window, press the “Windows Key + R” combination.
2. Enter %appdata% and press OK. This is a faster way to access the AppData folder because it is a hidden folder in Windows OS.
3. When you run the command, the system will open the “Roaming” folder within AppData.
4. You’ll notice a folder called “discord” that contains all of your user configurations and settings.
5. All that remains is for you to delete the “discord” folder.
6. Run the %localappdata% command in the Run window to accomplish the same thing.
7. After that, restart your computer and reopen Discord.
8. If you launch the app right now, it will be reset to its default settings. You will also need to re-enter your account credentials.

Check Antivirus Quarantine Folder

If disabling the antivirus program did not help, it is possible that the program quarantined one of Discord’s executable files, resulting in the fatal javascript error every time you launch it. An antivirus program’s quarantine feature is essentially a middle ground in which suspicious files are not deleted from the system but are kept disconnected from all other programs and blocked from execution.

This is a very useful feature because it allows you to check the deleted files and see if the program deleted an important file from one of your installed programs, in this case, Discord. Accessing the quarantine folder is simple, and detailed instructions can be found on the official support page of your antivirus program. Once you’ve located the file, simply click remove from quarantine and select “Allow on system” or a similar option in the prompt window. While you’re at it, add Discord’s installation directory to your antivirus program’s exclusion list.

Try Discord In Administrator Mode

Running the application in administrator mode is another way to resolve the javascript error on Discord. It simply circumvents the restrictions and allows all executable files to run in administrator mode, potentially resolving the fatal javascript error. Here’s how you can go about it:

1. Make a shortcut to “Discord” on your Computer/laptop. You can skip this step if one already exists.
2. Right-click the shortcut icon and select “Properties” from the menu that appears.
3. Now, navigate to the “Compatibility” section of the window and check the “Run this program as an administrator” box.
4. Now, click “Apply” to save the settings and “OK” to close the window.
5. Once you’ve done that, you’ll be able to launch Discord in administrator mode whenever you double-click the desktop shortcut icon.
6. You must, however, accept the Windows prompt each time you launch the application.

Use The Command Prompt

There are numerous issues with Windows OS and its programs that can be resolved by running simple commands from the command prompt. You can use it to perform complex tasks without having to do them manually. The command prompt will perform the difficult tasks for you based on the command you are running. There is a command that fixes the javascript error in Discord for a large number of users.

1. Look up “CMD” in the Windows 10/11 search box.
2. Right-click the “Command Prompt” result and select “Run as administrator” to launch the command prompt with elevated privileges.
3. Once in the command prompt window, make sure the top-left corner says “Administrator: Command Prompt:”.
4. Now, in the command window, type gpupdate /force and press enter to execute the command.
5. This command will force the Windows group policy to be updated, which will resolve all of the issues in the section.
6. When the process is finished, you will see a confirmation message in the command prompt.

Change Windows Audio Video Experience Service Parameters

You can also modify the Windows Audio Video Experience Service to see if it resolves the javascript issue in your case. This is essentially a Quality of Service platform introduced in Windows Vista that deals with the quality of audio and video services in Windows. Because Discord handles both audio and video transmission, it can be impacted by issues with the Windows Audio Video Experience Service. Here’s how to resolve the Windows Audio Video Experience Service issue:

1. In the Run window, type “Services.msc” into the blank box. In Windows, press Enter to open the “Services” window.
2. You will be able to see all active and inactive processes in Windows here.
3. Look for the Quality Windows Audio Video Experience service in the list and right-click it to see more options.
4. To access the parameters, select the “Properties” option.
5. Now, you will see the status of the service as “Running”.
6. To stop the process, press the “Stop” button.
7. Change the startup type to “Automatic” now.
8. Now, click “Apply” to save the changes and “OK” to close the properties window.
9. Restart your computer and then try to launch Discord again.

Final Words

After applying all this above solution and still stuck in the same issue than we recommend you to go to their official support website and request your problem to be solved. We have discussed the problem in detail along with some of the common reasons behind the problem in most cases. And with that, you will also get some trusted solutions that can easily fix the fatal javascript error in Discord on your computer, allowing you to use the program and all of its features again.

I hope you understand this article, How to Fix Discord Fatal Javascript Error in Windows 10/11.