A JavaScript error occurred in the main process message on Windos 10

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Some users are reporting a generic mistake message – A JavaScript error occurred in the principal procedure, Uncaught Exception that is triggered when they endeavour to launch some apps on Windows 10. In this mail service, nosotros will show you lot how to resolve this issue.

There aren't many determined causes for this trouble, however, the main reason tin can be that the app, its database or its settings accept virtually likely gone corrupt.

A JavaScript error occurred in the primary process

In the event, y'all meet this error, yous can bear out the following suggestions:

Delete the app data folders in %AppData% and %LocalAppData%.
Re-annals the JavaScript dll file.
Reinstall Skype, Discord, etc, app that is having problems.

Now let's see how you lot can employ this solution(due south) in practice.

1) Delete the app information folders in %AppData% and %LocalAppData%.

Deleting the %AppData% and %LocalAppData% folders should reset the app settings and possibly resolve the JavaScript error which is preventing you from opening the app.

Here's how you can delete these folders:

Launch Windows Explorer and click on This PC and then navigate to the post-obit location:

C:\Users\%username%\AppData\<app>

The <app> place-holder should be the proper noun of the app throwing up the JavaScript error.

If you are unable to run across the AppData folder, yous may need to plow on the option that enables y'all to view subconscious files and folders.

Delete the app binder in the AppData binder.

Next, press the Windows Cardinal + R key combination in order to bring up the Run dialog box. Type in the environs variable below and striking Enter.

%localappdata%

Locate the problematic app binder in the folder which opens, right-click on it, and click Delete.

Make sure that the folders are completely deleted and that in that location are no more remaining files in it. Check to see if the 'A JavaScript Fault Occurred in the Main Process' however appears subsequently restarting your computer and y'all launch the app.

2) Re-register the JavaScript dll file

Registering the JavaScript DLL file using the built-in Regsvr.exe could help. To exercise this, open a Control Prompt as an administrator, type the following and hit Enter:

regsvr32 jscript.dll

iii) Reinstall the app in question

Although from ane of our instance scenario presented above, the user stated that reinstalling the app didn't fix the issue. Withal, we still recommend y'all effort to uninstall and so reinstall the app.

I hope this helps you resolve this JavaScript fault!

Obinna Onwusobalu, has studied Information & Advice Technology and is a keen follower of the Windows ecosystem. He runs a figurer software clinic. He says information technology's best practice to create a System Restore Point earlier making whatsoever changes to your PC.