'A JavaScript error occurred in the main process' Discord Error

Starting from a niche product geared towards PC video game players, Discord managed to establish itself as one of the premier platforms for interaction between users through instant chat messages, VoIP (voice-over-IP), and video calls. As with any software product, however, errors do crop up and some users have reported encountering the 'A JavaScript error occurred in the main process' discord error. This particular issue appears upon starting the Discord client and prevents it from opening. There are several potential causes for this specific error so users may need to try several of the solutions described below until they find the one that works for them.

In some cases, the 'A JavaScript error occurred in the main process' discord error has been found to be caused by anti-malware solutions installed on the user's computer system. The security programs might have incorrectly flagged and quarantined certain essential Discord files that the app can no longer access.

Another common cause is Discord's files getting corrupted. This is easy to fix as what users will have to do is to simply reinstall the program. If the program has been reinstalled multiple times in a row, however, it may start causing problems with the files stored in the %AppData%/Discord and %LocalAppData%/Discord folders. Just to make sure we recommended deleting those folders manually before beginning the installation process. To access the location, press the Win button (Windows icon) on your keyboard + R. This should open the Run window. Now, type in %AppData% and press OK. Select the Discord folder, right-click it, and choose Delete from the available options. Repeat the process for the %LocalAppData% folder.