azure c-sdk mqtt connect fail

jun hu 1 Reputation point
when i ues azure-c-sdk-1.3.9,the mqtt connect fail,it's return the error code is "Connection Not Accepted: 0x5: Not Authorized",but if i use the 1.1.29 version,it's ok,

what's wrong with this issue.

Azure IoT Hub
Azure IoT Hub
An Azure service that enables bidirectional communication between internet of things (IoT) devices and applications.
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