>>6
http://seesaawiki.jp/yuzukiyukari_server/d/Discord%A5%A4%A5%F3%A5%B9%A5%C8%A1%BC%A5%EB%CA%FD%CB%A1
https://support.discordapp.com/hc/en-us/articles/209099387--Windows-Installer-Errors
試してみて