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

Some users report a generic error message – A JavaScript error occurred in the main process, exception not captured. this is triggered when they try to launch some applications on Windows 10. In this article we will show you how to solve this problem.

There are not many definite causes for this problem, however, the main cause may be that the application, its database, or its settings have most likely been corrupted.

A JavaScript error occurred in the main process.

If you encounter this error, you can apply the following suggestions:

1. Delete the application data folders in% AppData% and% LocalAppData%.
2. Re-save the JavaScript dll file.
3. Reinstall Skype, Discord, and other applications that have problems.

Now let's see how you can apply this or these solutions in practice.

1) Delete the application data folders in% AppData% and% LocalAppData%.

Delete the %% Application Data and % LocalAppData% Folders must reset the application settings and possibly resolve the JavaScript error that prevents you from opening the application.

Here's how you can delete these folders:

launching Windows Explorer and click This PC then go to the following location:

C: Users % username% AppData

the place-holder should be the name of the application generating the JavaScript error.

If you are unable to see the AppData folder, you may need to enable the option to view hidden files and folders.

Delete the app folder in the AppData folder.

Then, press the Windows Key + R key combination to display the Run dialog box. Type the environment variable below and press Enter.

%localappdata%

Find the problematic application folder in the folder that opens, right-click it, and then click Wipe off.

Make sure that the folders are completely deleted and that there are no more files left. Check if "A JavaScript error occurred in the main process" still appears after restarting your computer and launching the application.

2) Re-save the JavaScript dll file

Saving the JavaScript DLL file with the help of built-in Regsvr.exe could help. To do this, open a command prompt as administrator, type the following and press Enter:

regsvr32 jscript.dll

3) reinstall the application in question

Although, in one of the scenarios presented above, the user indicates that the reinstallation of the application does not solve the problem. Nevertheless, we still recommend that you try to uninstall and then reinstall the application.

I hope this helps you to solve this JavaScript error!