Make sure fix this problem is to delete all of the data and files from the Discord application. To achieve this, you can go to the %LocalAppData% folder and delete almost all Discord related files. After, you can reinstall Discord by running the setup process again.
If your anti-virus program quarantines data files on your PC, Discord will have a hard time accessing them. If your malware program possesses quarantined Discord’s files, make an effort adding them to the antivirus exemption list. If this doesn’t work, then you can as well try to whitelist the files in your computer.