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3. Download and install the Azure Device Explorer to generate the SAS Token. Go to this link to download the
software:
https://github.com/Azure/azure-iot-sdk-csharp/releases/download/2018-3-13/SetupDeviceExplorer.msi
4. Paste the Connection String --- Primary Key to the IoT Hub Connection String box. Then type the Protocol Gateway
HostName and click Update. In the end, generate the SAS Token.