TPM EK enrollment issue.
Hi, Getting error (Details: Endorsement key is invalid, or does not match the Enrollment. Error code: 400004) while enrolling TPM EK. we generate TPM EK >> [REDACTED]== Steps Followed : TPM (SLB9673) chip interface with esp32 with I2C…
Azure IoT Hub
IOT Hub Multiple connections on single device
Background: We have multiple applications and windows services that run on our devices at any one time. We were hoping we could communicate to IOT Hub from each of these services to send and receive messages but ran into this problem:…
Azure IoT Hub

We are experiencing a failure in sending IOT direct calls to iot devices, even though we see the device receives the command
We are experiencing errors in the backend when sending iot direct methods, even though we see that the device does receive the direct method call and responds correctly. From device logs: 28-05-2025 07:37:41.300000: IoT open door command received:…
Azure IoT Hub
Azure IoT Hub device connect through Application Gateway
I have a requirement for allowing a c# service deployed to a customer PC to connect to our Azure components. Currently they are all routed through an Application Gateway. I would like to expand our features in Azure and add IoT Hub so the service can…
Azure IoT Hub
Direct Methods 'Not Found' under load in IoT Hub
We are performing some load tests to check that our Edge Module is able to process the number of Direct Methods we need it to. We've been using the azure-iot-hub python module to call the direct methods. The payload is very small and is the same for…
Azure IoT Hub
Cost Cutting Effort for IoT Hub
Hello, Is there a way to reduce the cost of our IoT Hub? We are currently on a Standard Tier. I want to know if there are ways to lessen the cost of our IoT hub in development environment since there are no projects on going. I checked if theres an…
Azure IoT Hub

My iothub is delaying/buffering messages all of a sudden
All of a sudden, my iothub in azure buffers data and doesnt send them through for a few iothub devices. Im using nodejs to process the data from the iothub . pm2 restart 0 --watch=false --max-restarts=0 is the command i need to run for everything to…
Azure IoT Hub
Frequent disconnect/reconnect issue with IoT Hub Device.
I have an IoT Hub on the Standard plan (S1) and i have set up two IoT Hub Devices. One of the devices is routing data regularly and has a stable connection over MQTT (mqtts). The other one, with the exact same setup just with a different DeviceID,…
Azure IoT Hub
Azure IoT Hub - Total number of messages used doubled unexpectedly - What is the reason?
Recently we encountered a problem with IoT Hub related to hitting the daily quota for total number of messages used while the amount of devices and telemetry messages remained the same. Purple: Total number of messages used (Max) | Blue: Telemetry…
Azure IoT Hub

How to move data from Azure IoT Hub to SAP Digital Manufacturing cloud(DMC)
Hi, I'm looking for some guidance or reference architecture on connecting SAP DMC as a listener to Azure IoT Hub(Event Grid or Event Hub) MQTT messages directly rather thru a logic app. Any help is greatly appreciated. Thanks
Azure IoT Hub
Receive credentials from keyvault within an IoT Hub edge module
Hello! I'm still new to azure and have the following problem: I have an IoT hub with an edge device. On this device, several modules are deployed. Apart from the edgeHub and edgeAgent, there is some python code packaged in a docker container that runs…
Azure IoT Hub
IoT Hub Devices got disconnected
my all IOT device Disconnect, I have 92 device all device disconnect
Azure IoT Hub

Why does disable on a device not disable the device
I am using Azure IoT Hub and DPS. We have implemented reprovisioning once a device is blocked in Azure IoT Hub. When i disable the device in Azure IoT Hub by setting "Enable connection to IoT Hub" to false, clicking save and then rebooting…
Azure IoT Hub
Azure IoT Hub Defender Micro Agent on Yocto/STM32MP1 – No Defender Metrics in IoT Hub Portal
Hi all, I'm currently running the Azure IoT Defender Micro Agent on a Yocto-based image (STM32MP1), and although the logs suggest the agent is working and sending data, no Defender metrics are visible in the Azure IoT Hub portal under Defender…
Azure IoT Hub
Adding devices to IoT hub is greyed out
I'm not exactly sure why, but the option to add devices is greyed out on my IoT hub. The only hint it gives is maybe a network error.
Azure IoT Hub
how to connect a Panasonic PLC with a gateway and then establish the connection with IoT Hub?
Estoy tratando de conectar el PLC Panasonic FP0R-C32T con el gateway Weintek CMT-G01 y establecer una conexión con IoT Hub. He revisado la documentación de ambos dispositivos, pero hasta ahora no he logrado que se comuniquen correctamente. ¿Alguien con…
Azure IoT Hub
Module connection using x509 certificates
Hi, When reading the docs about connecting devices and modules using a x509 certificate there is this part about the required common name (CN): For modules using X.509 authentication, the module's certificate must have its common name (CN) formatted…
Azure IoT
Azure IoT Hub
Azure IoT SDK
Can't edit my IoT Hub resource
I created an IoT Hub resource and a Blob Storage account. Messages to the iot hub are routed to an Azure function (through the built in message routing) and to the blob storage. To set this up I had to create 2 routes in Hub Settings > Message…
Azure IoT Hub
Azure IoT Edge image build for AMD64, Arm64v8 in azure devops pipeline with supported Microsoft hosted agents
Hi Team, Hello SatishBoddu-MSFT, I have scenario, where I am building two types of images of same repo, using Azure IoT Edge Task (AzureIoTEdge@2). Just I am looping this IoT Edge Task for different platform, by replacing defaultPlatform: with two…
Azure IoT Edge
Azure IoT Hub
IoTHub Upload File Key Based Authentication
SImilar to this one beow: https://learn.microsoft.com/en-us/answers/questions/401852/im-getting-error-message-key-based-authentication I'm using the C# SDK to upload a file: and getting this result: Status: 403 (Key based authentication is not…