windows 8.1 error during connect: Get http://%2F%2F.%2Fpipe%2Fdocker_engine/v1.40/images/json: open //./pipe/docker_engine: code example
Example: error during connect: Get http://%2F%2F.%2Fpipe%2Fdocker_engine/v1.40/images/json:
docker-machine env --shell cmd default