In the ExifTool Commands screen, when I run a command, I get the following message (my parameter was -xmp:all):

"'C:/Program' is not recognized as an internal or external command,
operable program or batch file."

Right, I installed exiftool.exe in C:/Program Files
I tried moving exiftool.exe to my user folder which, unfortunately, is named "Computer User". Then I got this message:

"'C:/Users/Computer' is not recognized as an internal or external command,
operable program or batch file."

Then I realized the space in the directory name was the problem. After moving exiftool.exe to C: the command worked. Would it be possible to allow the use of a folder with a space?