NotAuthorized / No such host is known error

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1

Hello,

I tried publishing data to cumulocity with Mqtt in c#.

I copied the code here [url]MQTT client examples - Cumulocity IoT Guides

When I use “mqtt.cumulocity.com” with my tenantId/username password combination as it is instructed in the guide I get “Not Authorized” error and cannot connect to broker.

When I use MqttBox to publish data, I use “mqtt.cumulocity.com/tenantname” with the same credentials and there is no problem.

So I changed serverUrl in the c# code to “mqtt.cumulocity.com/tenantname” and this time it gives me “No Such Host is Known”

Either way I cannot connect to broker.

I cannot seem to find, Where am I messing up. Please help!

2

H Ömer,

on which tenant are you working? So you like to create a MQQT device there to publish data on your tenant?

best regards
Michael

3

Thanks for your reply Michael but it was apparently due to some erroneous config read.
It was trying to get username and password for the subtenant.

Best Regards

Ömer

4

Hi Omer,

sorry for my late reply. Do I get you last comment right, that you solved the issue?

best regards
Michael