Module identity fetch issue
I have registered an edge device[gateway] to Azure IoTHub using x509 self signed certificate. The device got registered fine and modules [edgeAgent,edgeHub] got deployed along with some custom edge modules- with deployment status 200, device and modules status reporting. The modules are running on the edge device but the modules keep restarting as they couldnt authenticate. edge Device registration is through x509 self signed certificate, with below properties in config.toml # Manual provisioning with x.509 certificates [provisioning] source = "manual" iothub_hostname = "REQUIRED_IOTHUB_HOSTNAME" device_id = "REQUIRED_DEVICE_ID_PROVISIONED_IN_IOTHUB" [provisioning.authentication] method = "x509" identity_cert = "REQUIRED_URI_OR_POINTER_TO_DEVICE_IDENTITY_CERTIFICATE" identity_pk = "REQUIRED_URI_TO_DEVICE_IDENTITY_PRIVATE_KEY" Logs from edgeHub: [INF] - Unable to authenticate client <deviceid>/<custom_edge_module> with cached service identity <deviceid>/<custom_edge_module> (Found: False). Resyncing service identity... <4> 2025-09-19 00:29:56.415 +00:00 [WRN] - Error while refreshing the service identity: <deviceid>/<custom_edge_module> OnBehalfOf: <deviceid> System.Collections.Generic.KeyNotFoundException: The given key '<deviceid>/<custom_edge_module>' was not present in the dictionary. at Microsoft.Azure.Devices.Edge.Hub.Core.DeviceScopeIdentitiesCache.RefreshServiceIdentityInternal(String refreshTarget, String onBehalfOfDevice, Boolean invokeServiceIdentitiesUpdated) in /mnt/vss/_work/1/s/edge-hub/core/src/Microsoft.Azure.Devices.Edge.Hub.Core/DeviceScopeIdentitiesCache.cs:line 187 device twin status: "deviceScope": "ms-azure-iot-edge://<devicescope>", "modelId": "", "status": "enabled", "statusUpdateTime": "0001-01-01T00:00:00.0000000Z", "lastActivityTime": "2025-09-19T00:47:10.0840495Z", "connectionState": "Connected", "cloudToDeviceMessageCount": 0, "authenticationType": "selfSigned", "x509Thumbprint": { "PrimaryThumbprint": "<thumbprint>" } Module identity twin of edgeHub: "modelId": "", "status": "enabled", "statusUpdateTime": "0001-01-01T00:00:00.0000000Z", "lastActivityTime": "2025-09-19T00:42:23.4967322Z", "connectionState": "Connected", "cloudToDeviceMessageCount": 0, "authenticationType": "sas", "x509Thumbprint": {} module identity twin of edgeAgent and other modules: "modelId": "", "status": "enabled", "statusUpdateTime": "0001-01-01T00:00:00.0000000Z", "lastActivityTime": "2025-09-19T00:54:15.6085296Z", "connectionState": "Disconnected", "cloudToDeviceMessageCount": 0, "authenticationType": "sas", "x509Thumbprint": {} The modules couldnt communicate to hub as they couldnt authenticate, where as the same modules works fine when the edge device is registered via shared access signature and send telemetry to iot hub. Please let me know where could the issue be for modules not able to communicate with iotHubcan't use create_from_edge_environment with proxy options - client doesn't connect to azure iot hub
Hello, I am trying to configure a client connection towards azure iot hub from a module. I've tried creating the client with create_from_edge_environment method and I get the following error: Traceback (most recent call last): File "/usr/local/lib/python3.10/site-packages/azure/iot/device/common/mqtt_transport.py", line 391, in connect rc = self._mqtt_client.connect( File "/usr/local/lib/python3.10/site-packages/paho/mqtt/client.py", line 914, in connect return self.reconnect() File "/usr/local/lib/python3.10/site-packages/paho/mqtt/client.py", line 1044, in reconnect sock = self._create_socket_connection() File "/usr/local/lib/python3.10/site-packages/paho/mqtt/client.py", line 3683, in _create_socket_connection return socks.create_connection(addr, timeout=self._connect_timeout, source_address=source, **proxy) File "/usr/local/lib/python3.10/site-packages/socks.py", line 209, in create_connection raise err File "/usr/local/lib/python3.10/site-packages/socks.py", line 199, in create_connection sock.connect((remote_host, remote_port)) File "/usr/local/lib/python3.10/site-packages/socks.py", line 47, in wrapper return function(*args, **kwargs) File "/usr/local/lib/python3.10/site-packages/socks.py", line 814, in connect raise GeneralProxyError("Socket error", error) socks.GeneralProxyError: Socket error: 407: Proxy Authentication Required This problem doesn't appear if I create the client using create_from_connection_string method. This adds complexity to my script and I would like to use create_from_edge_environment method. Does anybody have any insights on why one method works and the other doesn't? Thanks![new blog post] Azure IoT PnP from a device client perspective
What if every IoT message exposes the id of the interface it implements? What if it supports sub-components? What if it matches up with Azure IoT Devices and modules? See how IoT Plug and Play is implemented in Azure IoT to answer these questions Read the full story at: https://sandervandevelde.wordpress.com/2023/05/12/azure-iot-pnp-from-a-device-client-perspective/Microsoft Q&A v2: IoT-related Tags
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Get Device to Cloud messages in IoT Hub using Rest API
Hello, I'm currently trying to get the messages that I sent to my azure iot hub using rest api (postman), but without success, I always got 204 no content. thats how i'm sending the message: Type: POST Url: https://{{iothub-north}}/devices/{{new-device}}/messages/events?api-version={{api-version}} Authorization: SharedAccessSignature sr={my sas-key}&sig={my-sig}se={my-se}. Answer: 204 No Content. thats how i'm trying to get the messages: Type: GET Url: https://{{iothub-north}}/devices/{{new-device}}/messages/deviceBound?api-version={{api-version}} Authorization: SharedAccessSignature sr={my sas-key}&sig={my-sig}se={my-se}. Answer: 204 No Content. I was searching for some documentation and found this: https://learn.microsoft.com/en-us/rest/api/iothub/device/receive-device-bound-notification however, for what I understood, it only works for cloud to device messages, so can someone help me how can I get the messages that I sent from my device to my azure iot hub? Obs: I've created one service bus to link in my azure iot hub just to be sure that I'm receiving the messages that I sent, and it's working, so probably the issue is something about the way I'm trying to GET these messages.The Azure IoT Hub team needs your feedback about the new features in preview
Hi IoT friends The Azure IoT Hub team regularly publishes new features in preview so you get a chance to test them and provide feedback. Here is your opportunity to let them know what you liked, what works/doesn't work for you, what your suggestions are. You can find more information for the preview features here: https://docs.microsoft.com/azure/iot-hub/iot-hub-preview-mode. Your feedback will help the team deliver what you need! The Survey is this way: https://aka.ms/iothubpreviewsurveyPlayed with Azure IoT Central ... then stopped using it? We'd like to know why
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