Unable To Install ISO to USB using Windows 10

I am trying to install this OS onto a 64gb USB drive. When I go to mount the ISO it mounts it to my DVD drive, however I have no CD/DVD installed in my PC.

Never had problems creating other Linux distribution onto this USB and using this same PC. Im not understanding what I am doing wrong.

Thank you for any help!

Your default settings may direct .iso files to dvd burning/dvd drive.

Grab Etcher here:

Thank You!