Azure IoT Hub
An Azure service that enables bidirectional communication between internet of things (IoT) devices and applications.
1,135 questions
1 answer
Azure IoT hub getting delay response using direct Method call
We have free tier of Azure IoT hub. We want to open and close lock using azure IoT hub direct method. The locks are controlled with raspberry pi. The raspberry pi connected with azure IoT hub. The delay in opening a lock after receiving direct method…
asked 2020-11-11T07:34:06.097+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(185.6, 13%, 27%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EMB%3C/text%3E%3C/svg%3E)
Moghees Bin Zahid
1
Reputation point
commented 2020-12-04T15:28:40.99+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(54.400000000000006, 38%, 15%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EQ%3C/text%3E%3C/svg%3E)
QuantumCache
20,031
Reputation points
1 answer
One of the answers was accepted by the question author.
Understanding the IoT Device Provisioning Service registration limitations
Hi, When reading the limitations of the DPS: https://learn.microsoft.com/en-us/azure/iot-dps/about-iot-dps Then it say 1 million registrations and 50 IoT Hubs, so my question is: The limit on devices in an IoT hub is 1 million devices, but…
asked 2020-12-01T10:12:53.197+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(54.400000000000006, 70%, 15%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EMV%3C/text%3E%3C/svg%3E)
Mikkel Vagtborg
26
Reputation points
commented 2020-12-04T12:10:01.223+00:00
Mikkel Vagtborg
26
Reputation points
1 answer
One of the answers was accepted by the question author.
How many device can connect to IoT Hub at the same time
Hi, i want to ask how many azure iot device can connect to iot hub to send and receive msg at the same time. Thank for your support
asked 2020-12-03T04:41:58.483+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(99.2, 65%, 19%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ELD%3C/text%3E%3C/svg%3E)
long dao thanh
81
Reputation points
accepted 2020-12-03T14:13:13.467+00:00
long dao thanh
81
Reputation points
1 answer
One of the answers was accepted by the question author.
Azure Iot Hub direct method send with out respone
Hi Microsoft admin, i want to ask some questions about direct method of IoT hub. I am now developing a control application, write in Nodejs. I am successfully use the direct method, and i wonder if i can remove the response every time a direct method…
asked 2020-12-01T18:24:54.877+00:00
long dao thanh
81
Reputation points
accepted 2020-12-03T04:39:58.907+00:00
long dao thanh
81
Reputation points
2 answers
Docker on iotedge
I can't seem to get clarification on this question. Can I deploy any docker hub image to iot edge? For example, if I wanted to use the Nginx image (docker run --name some-nginx -d -p 8080:80 some-content-nginx). Will this work? Or say I…
asked 2020-11-28T15:34:10.587+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(6.4, 50%, 10%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EAM%3C/text%3E%3C/svg%3E)
A Meik
1
Reputation point
commented 2020-12-03T01:54:36.117+00:00
QuantumCache
20,031
Reputation points
1 answer
One of the answers was accepted by the question author.
Azure eventhub giving transport exception in Java 11
Hi while using eventhub which is configured in IOT hubs message route getting issue while using java 11. However after using java 8(as suggested in some foums) it got resolved Used below example: …
asked 2020-11-12T07:36:37.71+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(288, 91%, 37%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ESP%3C/text%3E%3C/svg%3E)
Singh, Pooja am
71
Reputation points
commented 2020-12-02T06:45:27.637+00:00
Singh, Pooja am
71
Reputation points
1 answer
One of the answers was accepted by the question author.
Receiving device to cloud messages - Do I need to attach a storage account to my IOT Hub to use EventProcessorClient
I am currently following the example here to receive the cloud messages. In that example I am using ReadEventsAsync. The example however states that: // The "ReadEventsAsync" method on the consumer is a good starting point for…
asked 2020-11-26T05:16:15.723+00:00
SilverChips
71
Reputation points
accepted 2020-11-28T16:11:28.533+00:00
SilverChips
71
Reputation points
1 answer
One of the answers was accepted by the question author.
Arduino ESP32 code for publishing and subscribing to device twins
I am having trouble finding a suitable arduino code for ESP32 to use with device twins. I have managed to find a ESp8266 code but couldn't find the ESP32 code. Can any one please direct me in the right path.
asked 2020-11-22T16:43:44.627+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(128, 20%, 22%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ESJ%3C/text%3E%3C/svg%3E)
Senuda Jayalath
41
Reputation points
commented 2020-11-28T03:36:04.24+00:00
Senuda Jayalath
41
Reputation points
2 answers
One of the answers was accepted by the question author.
Is it possible to clear the telemetry content of an IOT hub?
I wanted to know if its possible to clear the telemetry data that was sent by a device to the cloud ? Where is that data stored and is it possible to clear that data ?
asked 2020-11-25T10:48:52.397+00:00
SilverChips
71
Reputation points
accepted 2020-11-27T03:26:01.68+00:00
SilverChips
71
Reputation points
1 answer
One of the answers was accepted by the question author.
Request size and concurrent job issues when using JobClient (.NET SDK)
I have an Azure IoTHub (S2) environment with 4000+ devices, to which I'm trying to send the same TwinPatch to update them. I am hitting 2 different issues when trying to achieve this update. First To achieve this update, I am using the Azure IoT…
asked 2020-11-19T08:13:27.217+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(227.2, 26%, 32%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EFH%3C/text%3E%3C/svg%3E)
Frank Hoogmans
21
Reputation points
accepted 2020-11-26T07:39:05.917+00:00
Frank Hoogmans
21
Reputation points
2 answers
Java SDK, DeviceTwin desired properties update callbacks / notifications
Java SDK, looking for a way to receive a single notification / single callback execution when updating (patch) desired properties. Similar to receive_twin_desired_properties_patch in python SDK. I can see callbacks executed for each property in patch,…
asked 2020-11-03T00:31:51.063+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(112.00000000000001, 95%, 20%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ESA%3C/text%3E%3C/svg%3E)
Slava A
106
Reputation points
commented 2020-11-20T15:51:43.487+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(214.4, 74%, 30%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EAM%3C/text%3E%3C/svg%3E)
AshokPeddakotla-MSFT
28,226
Reputation points
1 answer
Telit And Azure IOT HUB connection
Hello I am trying to connect module Telit ME310 to Azure IOT hub. And have some problem with implementation with using AT-commands. I generate CA certificat and device chain with help of portal…
asked 2020-11-10T12:15:59.387+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(70.4, 48%, 16%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EA%3C/text%3E%3C/svg%3E)
Anton
6
Reputation points
commented 2020-11-20T14:29:58.49+00:00
António Sérgio Azevedo
7,666
Reputation points Microsoft Employee
1 answer
Sendig AVRO structure message to Azure IoT Hub
I am trying to send an AVRO structure message to Azure IoT Hub and consume the same. The problem is I am not able to change or manipulate the Device Twin in the AVRO structure. Can we have our Device Twin configured as an AVRO structure or is it not…
asked 2020-11-07T11:22:05.4+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(92.8, 8%, 18%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EKA%3C/text%3E%3C/svg%3E)
Kumar, Aman
1
Reputation point
commented 2020-11-20T10:53:26.437+00:00
AshokPeddakotla-MSFT
28,226
Reputation points
1 answer
One of the answers was accepted by the question author.
Suggest on how to send device message to IoT-hub using RESTAPI
I would like to use REST APIs to send device message to IoT hub without using the client APIs. There is an example on how to use that for file upload: GET (REST API) {iot hub}.azure-devices.net/devices/{deviceId}/files/{filename}. which will return…
asked 2020-11-06T02:16:19.98+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(48, 73%, 14%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EHT%3C/text%3E%3C/svg%3E)
Hsieh, Todd T
91
Reputation points
commented 2020-11-19T12:14:30.667+00:00
António Sérgio Azevedo
7,666
Reputation points Microsoft Employee
2 answers
Restrictions on deviceClient
opening two device clients: DeviceClient client = new DeviceClient(connString, protocol); client.open() with the same connection string from two different processes is causing both processes to fail:…
asked 2020-11-02T21:41:48.793+00:00
Slava A
106
Reputation points
commented 2020-11-12T03:18:13.157+00:00
QuantumCache
20,031
Reputation points
1 answer
I want to send C2D messages to Azure IOT device
Using Visual studio code or Azure iot explorer i want to send C2D message. Now when i am trying to send message its giving error: [C2DMessage] AMQP Transport: Could not connect. How to set protocol as MQTT and send C2D message ?
asked 2020-11-02T10:40:04.807+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(118.4, 73%, 21%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ERH%3C/text%3E%3C/svg%3E)
Rani H
1
Reputation point
commented 2020-11-11T16:21:33.917+00:00
AshokPeddakotla-MSFT
28,226
Reputation points
1 answer
One of the answers was accepted by the question author.
Azure IoT Edge Custom Module IoT Create Options - Host Config
I tried to use the DeviceCgroupRules property within the HostConfig of the section of the create options of a custom IoT Edge module and after setting the property the desired version of the create options shows the HostConfig with the DeviceCgroupRules…
asked 2020-08-20T14:17:23.383+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(166.4, 75%, 26%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EDK%3C/text%3E%3C/svg%3E)
Dominik Koller
21
Reputation points
commented 2020-11-10T08:19:05.717+00:00
Dominik Koller
21
Reputation points
1 answer
One of the answers was accepted by the question author.
upload file to blobstorage via azure-iothub without sdk
Hi, I want to upload a file to an azure-blob-storage through an azure-iot-hub account withour using the azure SDK. As stated in this docs (https://learn.microsoft.com/en-us/azure/iot-hub/iot-hub-devguide-file-upload), i have first created a blobstorage…
asked 2020-11-06T14:53:44.453+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(156.8, 65%, 25%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ECY%3C/text%3E%3C/svg%3E)
CAGNACCI, YAGO (Servicio Externo en YPF)
21
Reputation points
accepted 2020-11-09T11:48:32.047+00:00
CAGNACCI, YAGO (Servicio Externo en YPF)
21
Reputation points
1 answer
Azure IOT Edge device runtime Alert if it changes from "OK" to "An error occurred in the IoT Edge runtime"
Hi Team, We want to set an alert rule if the runtime response code changes from OK to "An error occurred in the IoT Edge runtime" 400 - The deployment configuration is malformed or invalid. 417 - The device doesn't have a deployment…
asked 2020-10-23T15:05:40.973+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(307.2, 57.99999999999999%, 39%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EGP%3C/text%3E%3C/svg%3E)
Girish Prajwal
706
Reputation points
commented 2020-11-03T20:14:46.36+00:00
QuantumCache
20,031
Reputation points
1 answer
One of the answers was accepted by the question author.
DPS zero touch provisioning using X.509 certificate on Azure Sphere
I'd like to do zero-touch provisioning on DPS with Azure Sphere MT3620. The certification type is "X.509" and I have my own root and leaf certificates. I have learned following module and would like to take same step. Automatically…
asked 2020-10-20T05:50:49.777+00:00
Yusuke Tochigi
56
Reputation points
commented 2020-11-03T06:25:06.067+00:00
Yusuke Tochigi
56
Reputation points