• Operating System Version: W10
• Provider (VirtualBox/VMWare): Virtualbox
• Vagrant Version: 2.0.1
• Packer Version: 1.1.3
• Is the issue reproducible or intermittent? Yes

Installation on Windows 10 is heavly depends on (free-space) of C drive. Since a lot of users use C:\ only for Windows (SSD) and D:\ for general purpose, this can be optional for a default user. I tried a lot of hacks to make it work. (I installed all tools and install scripts on D, still uses C for VMs etc like C:\Users\username...)

PS: Can be done defining VAGRANT_HOME to D:\etc_directory