Hi,
Let's make sure a few of the required pieces are installed and ready to go.
Please open a cygwin prompt.
From there type "uname", and report the output.
Now, let's check that RabbitMQ is running. From the same cygwin prompt type "net start". This will return a list of started services on your system, please copy that here.
Finally, open a PowerCLI window and type "Get-VIToolkitVersion". Return the info here.