After IrfanView 64 is installed (on Windows 10), it's not possible to configure the settings from the application.
(https://cdn.imgpaste.net/2020/12/22/U1C6w.md.png) (https://www.imgpaste.net/image/U1C6w)
(https://cdn.imgpaste.net/2020/12/22/U1ev7.md.png) (https://www.imgpaste.net/image/U1ev7)