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How to Fix "A JavaScript Error Occurred in the Main Process" Discord Error

4 ways you can fix the JavaScript Error in Discord

Many Discord users have complained about getting a JavaScript error in Discord, saying, “A JavaScript error occurred in the main process.” Discord throws this error when attempting to run it, but the error outright prevents the app from launching. Corrupted files and a non-running audio service are known causes for this error. Luckily, fixing Discord’s JavaScript is relatively easy by using the methods found in this article.

Discord is a VoIP, instant messaging, and digital distribution platform. The application allows users to make voice and video calls, send text messages and files. Discord’s appeal lies in that it is centered around community building.

Discord communities are organized into servers. Discord servers are a collection of chatrooms and voice chat channels that can be integrated with other gamer-focused services. A single Discord server can have multiple channels dedicated to different games, topics, or interests.

Discord also has a direct messaging feature that works much like any other communication platform. Direct messaging allows users to text, share files, live stream, and call other users privately.

While the software was initially marketed for gamers, it started attracting members of the general public in recent years.

Discord is currently at the top of their game. The app first became popular among gamers and later gained popularity among non-gamers. As of July 2019, Discord had over 250 million users.

Fix JavaScript Error in Discord

Without a doubt, Discord is one of the best VoIP applications currently on the market, but it still has its fair share of problems, and the JavaScript Error is one of the more common ones. But what causes this error? Let’s try to find out.

The most common cause for this error is when Discord’s files and/or settings have been corrupted. Therefore, all fingers point to Discord’s installation, and so reinstalling this program should fix the problem. Although, you might also want to try resetting the app to its original defaults before uninstalling it.

A lesser-known cause for the JavaScript error in Discord is third-party antivirus programs. These programs may mistakenly isolate and quarantine some of Discord’s files, resulting in a corrupted installation. Therefore, we recommend checking your antivirus program’s quarantine vault to see if there are any Discord files.

Another known cause for Discord’s JavaScript error is related to the Quality Windows Audio Video Experience service (qWAVE). This service provides features focused on streaming multimedia and real-time content over variable bandwidth networks.

qWAVE is necessary for Discord to run since it’s related to the program’s core functionality. If this service is not running for any reason, apps such as Discord will throw the JavaScript error. The solution is to set qWAVE to start automatically.

Another known reason for the JavaScript error in Discord is a rather odd one. If Discord runs with administrative privileges, this setting may be the cause of the error. So to fix the error, you can try disabling the “Run as administrator” option for Discord.

“A JavaScript error occurred in the main process” may also occur in cases when Discord was previously installed and uninstalled. Installing it again can sometimes trigger the JavaScript error. In such an event, we recommend Deleting all Discord-related temporary files found in %AppData%/Discord and %LocalAppData%/Discord. Make sure that no Discord processes are running when attempting to delete the folders.

In closing, the JavaScript error in Discord can occur due to multiple reasons. All of these reasons are in some way related to either a corrupted Discord installation or a non-running Windows service. We have compiled a list of possible fixes to this error. However, before you use the fixes, we suggest checking whether your antivirus program (if you have one) has quarantined any of Discord’s files. Please see the detailed guides for each method below and check out the video guide at the bottom of the page

Table of Contents:

Method 1. Run Discord without administrative privileges

Many users have attested to the fact that running Discord without administrative privileges actually fixes the JavaScript error. So if you, for some reason, have configured Discord to run as administrator, we recommend that you uncheck this option and see if this fixes the error.

Right-click Discord shortcut and click Properties

1. Right-click Discord’s shortcut and click Properties.

Uncheck Run this program as administrator

2. Navigate to the Compatibility tab.

3. Unmark the checkbox next to the Run this program as an administrator option.

4. Click Apply and click OK.

5. Launch Discord to see if the issue was fixed.

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Method 2. Configure Quality Windows Audio Video Experience service (qWAVE) to start automatically

Quality Windows Audio Video Experience service (qWAVE) is essential for Discord to work properly. The startup type of this service is set to manual by default. Changing the startup type to automatic may resolve the issue.

1. Hold down Windows+R keys to open Run.

Type in services.msc and click OK

2. Type in services.msc in the Run dialog box and click OK.

Right-click qWave and click Properties

3. Scroll through the services list and find Quality Windows Audio Video Experience.

4. Right-click the service and click Properties.

Set Startup type to Automatic

5. Open the Startup type drop-down menu and select Automatic.

Start qWave service and click Apply and click OK

6. Under Service status, click Start.

7. Click Apply and click OK.

8. Launch Discord to see if the issue was fixed.

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Method 3. Reinstall Discord

If none of the methods work and you keep getting the JavaScript error, you can try reinstalling Discord as a last resort solution. Reinstalling Discord will remove any corrupt files replacing them with new ones.

1. Make sure no Discord processes are running. Hold down Ctrl+Shift+Esc to open Task Manager.

Right-click Discord process and click End task

2. Find all Discord-related processes, right-click them and click End task.

Right-click Start and click Apps and Features

3. Right-click the Start Menu button and select Apps and Features.

4. Scroll through the list and find Discord.

Select Discord and click Uninstall

5. Select Discord, click Uninstall, and then click Uninstall again.

6. Wait for Discord to uninstall.

Go to Discord's download page

7. Then, open your browser and go to Discord’s download page.

Click the Download for Windows button

8. Click the Download for Windows button.

9. Run the installer once the download is complete. Discord will launch automatically once the installation is complete.

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Method 4. Delete Discord folders in %AppData% and %LocalAppData%

Discord stores temporary data on your PC in hidden %AppData% and %LocalAppData% folders. Deleting Discord folders in the previously mentioned locations serves to reset Discord’s settings and should resolve the JavaScript error when attempting to reinstall Discord. However, you have to make sure that no Discord processes are running because if they are, then not all files will be deleted.

We also recommend terminating all of Discord’s processes and trying to run it again first. If that doesn’t work, then proceed with deleting Discord folders in %AppData% and %LocalAppData%.

1. Make sure no Discord processes are running. Hold down Ctrl+Shift+Esc to open Task Manager.

Right-click Discord's processes and click End task

2. Find all Discord-related processes, right-click them and click End task.

Right-click Start and click Apps and Features

3. Right-click the Start Menu button and select Apps and Features.

4. Scroll through the list and find Discord.

Select Discord and click Uninstall

5. Select Discord, click Uninstall, and then click Uninstall again. Wait for Discord to uninstall.

6. Hold down Windows+R keys to open Run.

Type in %AppData% in Run and click OK

7. In the Run dialog box, type in %AppData% and click OK.

Right-click Discord's folder and click Delete

8. Find the Discord folder, right-click it and click Delete.

9. Close the window.

10. Again, hold down Windows+R keys to open Run.

Type in %LocalAppData% in Run and click OK

11. Type in %LocalAppData% and click OK.

Right-click Discord folder and click Delete

12. Find the Discord folder, right-click it and click Delete.

Go to Discord's doownload page

13. Then, open your browser and go to Discord’s download page.

Click Download for Windows to get Discord

14. Click the Download for Windows button.

15. Run the installer once the download is complete. Discord will launch automatically once the installation is complete.

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Video guide on how to fix "A JavaScript Error Occurred in the Main Process" Discord error

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About the author:

Tomas Meskauskas

I am passionate about computer security and technology. I have an experience of 10 years working in various companies related to computer technical issue solving and Internet security. I have been working as an editor for pcrisk.com since 2010. Follow me on Twitter to stay informed about the latest tech news or online security threats. Contact Tomas Meskauskas.

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