So we download a lot of .ISO file from various sources. I needed to install Windows 10 x64 Pro and was having trouble identifying which was which from the different versions I had been testing. This was important to me because I needed to know if it was Retail, VL, or MSDN. This should work for Vista and up, basically any windows that has WIM files within.

First you will need to mount the ISO file to a computer so you can browse it. Then open up a command prompt as administrator and run the following command.

(I is the drive letter for the mounted ISO file)

Here is an example of the output from the command for a Windows 10 Pro ISO.