Windows should be capable of formatting the drive in fat32 up to 8 terabytes. You’ll need to can use the command prompt format tool.
Go to accessories and right click on CMD and select run as administrator.
type in
format <drive leter> /fs:fat32
The limitation that I’m aware of, of “windows” not being able to format drives over 32GB) I believe only applies to the installation, although if I’m wrong, then I’ve at least learned something today!
If you’re still having problems, use EASUS partition manager to format the external drive.
edited as I was wrong!