Deleting the Discord data folders is the most common fix for Discord JavaScript errors when trying to start up the application. Essentially, you'll be deleting what could be corrupt or broken ...

The Discord fatal javascript error is among the many issues encountered by Discord users on Windows 10. This error is typically encountered during the Discord app installation.

Re-register the JavaScript dll file. Reinstall Skype, Discord, etc, app that is having problems. Now let’s see how you can apply this solution (s) in practice.