If the user name has spaces, problems.
c:\Users\Owen Brotherwood\ has a space in path
Owen Brotherwood@DESKTOP-AUAFMJR MINGW64 /c/source/repos/bfayers/microbit-vagrants (master)
$ vagrant plugin install vagrant-auto_network
The directory where plugins are installed (the Vagrant home directory)
has a space in it. On Windows, there is a bug in Ruby when compiling
plugins into directories with spaces. Please move your Vagrant home
directory to a path without spaces and try again.
If the user name has spaces, problems. c:\Users\Owen Brotherwood\ has a space in path