Thanks for the quick followup. I finally resolved the issue. The issue seems to be that the media creator can't access the internet to download the ISO. While I read the instructions, it doesn't seem to inform, at least not obviously, the user that you really should download the ISO yourself. If the media creation tool can access the internet to download, by design, then the failure is in that situation. My router should not have had a problem letting the iso go through.
I used DD and the media rescue tool to create the LiveUSB, I had trouble with the DD, but I have had trouble with using hybrid ISO's to make a usb stick with the image before, it seems to recognize it as a hybrid, so I think you are right, it is a hybrid.
WITH the ISO on hand, (please update the instructions if the ISO is supposed to be downloaded before or fix the media creation tool to download it itself if it is supposed to be able to do that), the media creation tool created a good LiveUSB stick. I will try DD again later tonight to make sure that DD can or can't do this.
I do have a followup question. One of the computers I have to check is on a wireless connection. It is a desktop and I am using an ASUS wifi pcie card for this. How can I update the image to include the drivers for this card? or is there a way to have a generic wifi driver on the ISO so it can work with most of these wifi setups? Failing that, can I update the scanner with an offline updated virus signiture file?
I realize that ESET sysrescue is more effective if it can connect to the internet, but I am unable to provide an ethernet connection, I can only give it a WiFi connection with this particular computer.
Thanks again for the quick answer.
To answer the question of another user, hybrid images can be burned in *nix OS's to a thumb drive without having to go through the extra steps to make it a bootable stick. It can be written using DD but in Windows you just have to either use some third party usb stick creation tool, exactly like you would with a regular ISO or the provided media creation tool. For windows there is no difference between the too, at least I don't think there is at this time. That might change if/when Microsoft desides to do such a change.
In windows, with my resent experience, just use the media creation tool with the ISO already downloaded on your computer. That seems to be the easiest way.