Running Docker for Windows, Error when exposing Ports

Question

I am aware there are a lot of questions about running Docker on windows, however this question is about running the brand new Docker for Windows, on Windows.
In my case I am

Answer 1

Try stopping docker and initiating it again on administrator mode. After it starts open power shell on administrator mode as well. Because the error says "mkdir" maybe this will solve your problem. Im not sure but it worked for me. In the case of using -P a port conflict does not seen to be the reason for the error once -P will chose ports randomly. The error it self wasn't quite friendly to me but because I saw the mkdir word on it I imagined it might be a permission error, thats why I restarted docker on administrator mode and started power shell on administrator mode.