Yes, Windows 10 can mount ISOs without issues.
Doesn't it look like I'm making a mistake? Don't remind me to bring something up again like during the XP era.
It functions properly. You can place .iso files by right-clicking and choosing Mount.
Yes.
It looks like the issue was resolved after using Ninite, which changed how the default settings worked.
I don't need to do anything; just double-click the file.