mqtt.js returned Failure on first connection (Not authorized): Connection refused: Not authorized error

Jonas Trumpfheller 21

Hi,

i am trying to connect a raspberry pi to my IoT-Hub. I am using this tutorial: iot-hub-raspberry-pi-kit-node-get-started

but when i am this command: sudo node index.js '<YOUR AZURE IOT HUB DEVICE CONNECTION STRING>'

i get this Error: "mqtt.js returned Failure on first connection (Not authorized): Connection refused: Not authorized error"

I hope you can help me.

Thank you very much.

Matthijs van der Veer 4,376 Reputation points MVP

2021-02-18T10:17:17.603+00:00

Hi! Did you use the connection string that you copied from your IoT Hub? After you create a device in IoT Hub, there is a Primary Connection String that you can copy.
Jonas Trumpfheller 21 Reputation points

2021-02-18T10:25:02.327+00:00

Yes I used the primary connections String after I created my IoT-Device in Azure.

1 answer

Sander van de Velde | MVP 31,931 Reputation points MVP

2021-02-18T10:09:05.22+00:00
Hello @Jonas Trumpfheller ,

did you fill in your own specific IoT Hub Device connection string?

if looks like

HostName=mslearn.azure-devices.net;DeviceId=testdevice;SharedAccessKey=0iE[skipped big part]wY=

You find it in the Azure Portal:
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1 person found this answer helpful.
Jonas Trumpfheller 21 Reputation points

2021-02-18T10:31:06.033+00:00

Hello @Sander van de Velde | MVP ,

i've used the primary connection String i get after i created my IoT-Device. But I dont konw what to do with the error i get.

Sander van de Velde | MVP 31,931 Reputation points MVP

2021-02-18T10:45:54.973+00:00

Is your device actually internet-connected? (please try to ping 8.8.8.8 or open a browser page eg. )

Jonas Trumpfheller 21 Reputation points

2021-02-18T10:48:39.323+00:00

Yes my Rasberry Pi is connected to the internet.

Jonas Trumpfheller 21 Reputation points

2021-02-18T11:42:44.453+00:00

Perhaps is has something to do with this Waring:

npm WARN iot-hub-node-raspberrypi-client-app@1.0.0 No repository field.

QuantumCache 20,261 Reputation points

2021-02-24T22:18:03.487+00:00

Hello @Jonas Trumpfheller Are you still blocked on this issue? Please let us know how can we help you, a more detailed screenshot of the issue or any logs would be helpful to understand it better.///
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