Change
platforms:
- name: kensykora/windows_2012_r2_standard
driver:
customize:
memory: 2048
to
platforms:
- name: windows_2012_r2_standard
driver:
box: kensykora/windows_2012_r2_standard
customize:
memory: 2048
You want your platform name to start with “win” otherwise your box is treated as a linux box.