cmd /c doesn’t like quotes

I was quite baffled at first.

This works:

cmd /c "C:\Program Files\7-Zip\7z.exe" C:\Temp\MyFile.7z

But this fails:

cmd /c "C:\Program Files\7-Zip\7z.exe" "C:\Temp\My Other File.7z"
'C:\Program' is not recognized as an internal or external command, operable program or batch file.

Turns out it’s an issue as old as Windows 2000.

The solution is to add another pair of quotes around the entire command:

cmd /c ""C:\Program Files\7-Zip\7z.exe" "C:\Temp\My Other File.7z""

Thank you, Microsoft.