There are 2 ways for connecting vNode to Microsoft Azure IOT data Hub:
1. Connecting using username and password.
2. Connecting via X.509 Certificates.
For both scenarios it will needed to download and install Device Explorer using the following URL:
https://github.com/Azure/azure-iot-sdk-csharp/tree/master/tools/DeviceExplorer.
Take a look to this QuickStart Guide to setup vNode against Azure IoT Hub