vagrant up
Bringing machine 'default' up with 'virtualbox' provider...
==> default: Importing base box 'WindowsDocker'...
==> default: Matching MAC address for NAT networking...
==> default: Setting the name of the VM: temp_default_1489982222856_48671
==> default: Clearing any previously set network interfaces...
==> default: Preparing network interfaces based on configuration...
    default: Adapter 1: nat
==> default: Forwarding ports...
    default: 5985 (guest) => 55985 (host) (adapter 1)
    default: 5986 (guest) => 55986 (host) (adapter 1)
    default: 22 (guest) => 2222 (host) (adapter 1)
==> default: Booting VM...
==> default: Waiting for machine to boot. This may take a few minutes...
    default: WinRM address: 127.0.0.1:55985
    default: WinRM username: vagrant
    default: WinRM execution_time_limit: PT2H
    default: WinRM transport: negotiate
    default: Warning: Authentication failure. Retrying...
    default: Warning: Authentication failure. Retrying...
    default: Warning: Authentication failure. Retrying...

$securePassword = ConvertTo-SecureString 'vagrant' -asplaintext -force
$cred = New-Object System.Management.Automation.PSCredential ('vagrant', $securePassword)
enter-pssession 127.0.0.1 -port 55985 -Auth CredSSP -credential $cred
[127.0.0.1]: PS C:UsersvagrantDocuments> exit