# Uncategorized **URL:** https://community.hivemq.com/c/uncategorized/1.md [Latest](https://community.hivemq.com/latest.md) · [Categories](https://community.hivemq.com/categories.md) --- ## [HiveMQ Support Forum](https://community.hivemq.com/t/hivemq-support-forum/7)
**Author:** [@system](https://community.hivemq.com/u/system)\ **Replies:** 1\ **Last updated:** [February 21, 2024, 9:44am UTC](https://community.hivemq.com/t/hivemq-support-forum/7 "2024-02-21T09:44:33Z")
Use our HiveMQ Support Forum to get support with HiveMQ Open Source projects (Broker and Client Library). Feel free to search our existing threads or start new ones, if you cannot find what you are looking for. You can … --- ## [Support for passing custom SSLContext or single-alias filtering in Android HiveMQ Client](https://community.hivemq.com/t/support-for-passing-custom-sslcontext-or-single-alias-filtering-in-android-hivemq-client/4075)
**Author:** [@akshay.harale](https://community.hivemq.com/u/akshay.harale)\ **Replies:** 0\ **Last updated:** [September 24, 2026, 4:58am UTC](https://community.hivemq.com/t/support-for-passing-custom-sslcontext-or-single-alias-filtering-in-android-hivemq-client/4075 "2026-09-24T04:58:51Z")
Hi HiveMQ Team, We are using the HiveMQ Android MQTT Client and need guidance on configuring TLS client authentication and certificate trust scoping. Current Issue: Our application maintains a KeyStore containing 4 dif… --- ## [HiveMQ doesnt run with the systemctl](https://community.hivemq.com/t/hivemq-doesnt-run-with-the-systemctl/4061)
**Author:** [@MarianoB](https://community.hivemq.com/u/MarianoB)\ **Replies:** 1\ **Last updated:** [September 21, 2026, 1:21pm UTC](https://community.hivemq.com/t/hivemq-doesnt-run-with-the-systemctl/4061 "2026-09-21T13:21:16Z")
I installed HiveMQ on linux using the guide on HiveMQ Documentation, it runs when i start the run.sh but not when i use systemctl start hivemq.service, I would like guidence because the LLMs want to change the hivemq.ser… --- ## [Ignition edge(sparkplug message) to hivmq to influxdb](https://community.hivemq.com/t/ignition-edge-sparkplug-message-to-hivmq-to-influxdb/4058)
**Author:** [@jonamleonel](https://community.hivemq.com/u/jonamleonel)\ **Replies:** 10\ **Last updated:** [July 31, 2026, 5:48pm UTC](https://community.hivemq.com/t/ignition-edge-sparkplug-message-to-hivmq-to-influxdb/4058 "2026-07-31T17:48:27Z")
Hello HiveMQ Community, I hope you are doing well. I am currently working on an industrial IoT learning project using Ignition Edge, MQTT Sparkplug B, HiveMQ, InfluxDB, and eventually Grafana. My current architecture … --- ## [HiveMQ Edge UNS config](https://community.hivemq.com/t/hivemq-edge-uns-config/4059)
**Author:** [@Naga](https://community.hivemq.com/u/Naga)\ **Replies:** 1\ **Last updated:** [July 9, 2026, 4:18pm UTC](https://community.hivemq.com/t/hivemq-edge-uns-config/4059 "2026-07-09T16:18:04Z")
Hello everyone, I’m working with HiveMQ Edge and I’ve noticed something unexpected with the UNS (Unified Namespace) setting. Without enabling UNS, I’m able to publish data successfully and see it in the HiveMQ WebCli… --- ## [Modbus slave sends 1200 holding floats input](https://community.hivemq.com/t/modbus-slave-sends-1200-holding-floats-input/4040)
**Author:** [@Aishwarya](https://community.hivemq.com/u/Aishwarya)\ **Replies:** 0\ **Last updated:** [June 10, 2026, 5:09am UTC](https://community.hivemq.com/t/modbus-slave-sends-1200-holding-floats-input/4040 "2026-06-10T05:09:28Z")
Modbus slave sends 1200 holding floats input --- ## [Is an async call in onDisconnect() allowed?](https://community.hivemq.com/t/is-an-async-call-in-ondisconnect-allowed/4015)
**Author:** [@ounger](https://community.hivemq.com/u/ounger)\ **Replies:** 1\ **Last updated:** [April 15, 2026, 7:03am UTC](https://community.hivemq.com/t/is-an-async-call-in-ondisconnect-allowed/4015 "2026-04-15T07:03:36Z")
Hello I implemented my own mqtt client using your lib. We need a JWT as a token to connect or reconnect. So I’m using an asynchronous call to fetch a token when connecting or reconnecting. In the logs I see the followi… --- ## [Ewon Flexy device not able to connect to Hive MQ MQTT Broker](https://community.hivemq.com/t/ewon-flexy-device-not-able-to-connect-to-hive-mq-mqtt-broker/1183)
**Author:** [@side](https://community.hivemq.com/u/side)\ **Replies:** 16\ **Last updated:** [April 1, 2026, 12:08pm UTC](https://community.hivemq.com/t/ewon-flexy-device-not-able-to-connect-to-hive-mq-mqtt-broker/1183 "2026-04-01T12:08:02Z")
Hi, I am working for a company called HMS and we are manufacturing the device “Ewon Flexy”. This device is an IOT gateway and it supports the MQTT protocol to send data to many different platforms (Mosquitto, Azure IOT… --- ## [SIM7600 MQTT Connection Failure](https://community.hivemq.com/t/sim7600-mqtt-connection-failure/3929)
**Author:** [@Chuka77](https://community.hivemq.com/u/Chuka77)\ **Replies:** 1\ **Last updated:** [March 16, 2026, 4:45pm UTC](https://community.hivemq.com/t/sim7600-mqtt-connection-failure/3929 "2026-03-16T16:45:32Z")
\#include \ // Hardware pin definitions #define SIM7600\_RX\_PIN 25 #define SIM7600\_TX\_PIN 26 #define PWRKEY\_PIN 4 // MQTT configuration const char\* broker = "broker.hivemq.com"; const int brokerPort = 1883; con… --- ## [ESP32 publishes to HiveMQ Cloud but WebSocket client gets connection timeout](https://community.hivemq.com/t/esp32-publishes-to-hivemq-cloud-but-websocket-client-gets-connection-timeout/3972)
**Author:** [@SAIKRISHNA](https://community.hivemq.com/u/SAIKRISHNA)\ **Replies:** 1\ **Last updated:** [March 16, 2026, 4:39pm UTC](https://community.hivemq.com/t/esp32-publishes-to-hivemq-cloud-but-websocket-client-gets-connection-timeout/3972 "2026-03-16T16:39:40Z")
Hello HiveMQ Community, I have an ESP32 DevKit that successfully connects to HiveMQ Cloud and publishes messages. In a previous project, I used a different setup but the same logic, and the WebSocket client was able to … --- ## [HiveMQ Edge - modbus](https://community.hivemq.com/t/hivemq-edge-modbus/3917)
**Author:** [@Edward](https://community.hivemq.com/u/Edward)\ **Replies:** 1\ **Last updated:** [February 20, 2026, 1:13pm UTC](https://community.hivemq.com/t/hivemq-edge-modbus/3917 "2026-02-20T13:13:48Z")
Hello Does HiveMQ Edge support ModBus Write Commands? If so - available in open source or commerical offering? If not - can it be developed via plugins? Any discussion on basically write commands on the soutbound con… --- ## [Apparent corruption in data folder](https://community.hivemq.com/t/apparent-corruption-in-data-folder/3997)
**Author:** [@EmbeddedHacker](https://community.hivemq.com/u/EmbeddedHacker)\ **Replies:** 1\ **Last updated:** [February 20, 2026, 1:04pm UTC](https://community.hivemq.com/t/apparent-corruption-in-data-folder/3997 "2026-02-20T13:04:04Z")
Hi! We’ve been experiencing what looks like data corruption on two machines that we know of. It could be specific to those machines, but I’d like to compare notes with other people anyway. It seems we get HiveMQ to cra… --- ## [Water Project Help](https://community.hivemq.com/t/water-project-help/3993)
**Author:** [@0rr0r](https://community.hivemq.com/u/0rr0r)\ **Replies:** 1\ **Last updated:** [February 18, 2026, 3:51pm UTC](https://community.hivemq.com/t/water-project-help/3993 "2026-02-18T15:51:04Z")
Hey, this is probably unlike most of the posts here I’m a college student whose looking into creating a project for their comp sci class, and the idea is that as part of it I’d want to be able to measure the water level… --- ## [Experience with Microsoft Fabric MQTT Connector](https://community.hivemq.com/t/experience-with-microsoft-fabric-mqtt-connector/3979)
**Author:** [@TePe](https://community.hivemq.com/u/TePe)\ **Replies:** 1\ **Last updated:** [February 16, 2026, 4:51pm UTC](https://community.hivemq.com/t/experience-with-microsoft-fabric-mqtt-connector/3979 "2026-02-16T16:51:45Z")
Is there any experience around connecting Microsoft Fabric’s MQTT Connector to HiveMQ? I can connect, I see events flowing in but I get errors stating that there was a problem with deserialization: "Message": { … --- ## [Home Assistant -\> Mosquitto Brocker bridge to HiveMQ -\> Step by step?](https://community.hivemq.com/t/home-assistant-mosquitto-brocker-bridge-to-hivemq-step-by-step/3989)
**Author:** [@ohaldi](https://community.hivemq.com/u/ohaldi)\ **Replies:** 4\ **Last updated:** [February 4, 2026, 12:45pm UTC](https://community.hivemq.com/t/home-assistant-mosquitto-brocker-bridge-to-hivemq-step-by-step/3989 "2026-02-04T12:45:12Z")
Hello, I am trying to set up an MQTT bridge between a Mosquitto broker installed on Home Assistant and a HiveMQ broker. I created the configuration file \\share\\mosquitto\\hivemq.conf, with the following content: #Mosqu… --- ## [HiveMQ Edge - Is OPCUA to MQTT adapter able to forward quality code?](https://community.hivemq.com/t/hivemq-edge-is-opcua-to-mqtt-adapter-able-to-forward-quality-code/3987)
**Author:** [@f.i.l](https://community.hivemq.com/u/f.i.l)\ **Replies:** 3\ **Last updated:** [January 26, 2026, 10:41am UTC](https://community.hivemq.com/t/hivemq-edge-is-opcua-to-mqtt-adapter-able-to-forward-quality-code/3987 "2026-01-26T10:41:32Z")
Hello, I’m looking for a solution to forward OPCUA data over MQTT. HiveMQ Edge (Free edition) seems to address most of the problem. It nicely forwards value and timestamp in a JSON. But I wasn’t able to configure it in … --- ## [Problem with HiveMQ Cluster with docker](https://community.hivemq.com/t/problem-with-hivemq-cluster-with-docker/3966)
**Author:** [@MarianoB](https://community.hivemq.com/u/MarianoB)\ **Replies:** 1\ **Last updated:** [December 9, 2025, 2:31pm UTC](https://community.hivemq.com/t/problem-with-hivemq-cluster-with-docker/3966 "2025-12-09T14:31:56Z")
More of a docker problem than Hivemq itself but would like some help I got 2 VMs red hat 9 that need to have hivemq installed to run as a cluster (I got the license). Got problems installing them on the OS (dont remembe… --- ## [HiveMQ Edge - OPCUA Adapter: Problem with reconnect](https://community.hivemq.com/t/hivemq-edge-opcua-adapter-problem-with-reconnect/3945)
**Author:** [@AriHive](https://community.hivemq.com/u/AriHive)\ **Replies:** 2\ **Last updated:** [November 19, 2025, 10:38am UTC](https://community.hivemq.com/t/hivemq-edge-opcua-adapter-problem-with-reconnect/3945 "2025-11-19T10:38:01Z")
Hi, we have the following Setup: HiveMQ Edge \[2025.18\] running with some OPCUA Adapters. Our OPCUA Servers are running on separate machines. Every night, the machines are shut down, and therefore the OPCUA Servers are … --- ## [Where is chained brokers and MQTT gateways architecture diagram?](https://community.hivemq.com/t/where-is-chained-brokers-and-mqtt-gateways-architecture-diagram/3939)
**Author:** [@anlex\_N](https://community.hivemq.com/u/anlex_N)\ **Replies:** 3\ **Last updated:** [November 3, 2025, 11:26pm UTC](https://community.hivemq.com/t/where-is-chained-brokers-and-mqtt-gateways-architecture-diagram/3939 "2025-11-03T23:26:32Z")
how can brokers be chained together? how are MQTT gateways connected to cloud services? I have read many HIVEMQ blogs, but find no architecture diagram such like this scenarios? --- ## [I can not join slack](https://community.hivemq.com/t/i-can-not-join-slack/3937)
**Author:** [@anlex\_N](https://community.hivemq.com/u/anlex_N)\ **Replies:** 1\ **Last updated:** [October 29, 2025, 8:25pm UTC](https://community.hivemq.com/t/i-can-not-join-slack/3937 "2025-10-29T20:25:34Z")
\*\*please give me slack invitation link my email: an0291170@gmail.com Error shows I have no hivemq.com email. --- ## [Unable to connect with MQTT explorer](https://community.hivemq.com/t/unable-to-connect-with-mqtt-explorer/3935)
**Author:** [@quabal666](https://community.hivemq.com/u/quabal666)\ **Replies:** 1\ **Last updated:** [October 8, 2025, 7:29am UTC](https://community.hivemq.com/t/unable-to-connect-with-mqtt-explorer/3935 "2025-10-08T07:29:44Z")
I have tested everything for 3 days, I do not understand, I have put the tls certificate, xsrgroot1.pem, everything is activated, the passwords are good it is horrible. --- ## [IMPLEMENTATION\_SPECIFIC\_ERROR when connecting HiveMQ Edge with Azure Event Grid via MQTT bridge](https://community.hivemq.com/t/implementation-specific-error-when-connecting-hivemq-edge-with-azure-event-grid-via-mqtt-bridge/3925)
**Author:** [@viotas](https://community.hivemq.com/u/viotas)\ **Replies:** 4\ **Last updated:** [September 16, 2025, 8:26am UTC](https://community.hivemq.com/t/implementation-specific-error-when-connecting-hivemq-edge-with-azure-event-grid-via-mqtt-bridge/3925 "2025-09-16T08:26:17Z")
I am trying to connect HiveMQ Edge via MQTT bridge to Azure Event Grid. For that purpose I created self signed certificates. After filling in the details on host username and certificate in the MQTT bridge UI, I get the … --- ## [Connecting HiveMQ Edge To Hive MQ Enterprise on same PC](https://community.hivemq.com/t/connecting-hivemq-edge-to-hive-mq-enterprise-on-same-pc/3924)
**Author:** [@alarratt](https://community.hivemq.com/u/alarratt)\ **Replies:** 2\ **Last updated:** [September 12, 2025, 6:18pm UTC](https://community.hivemq.com/t/connecting-hivemq-edge-to-hive-mq-enterprise-on-same-pc/3924 "2025-09-12T18:18:33Z")
Trying to wrap my head around how this stuff works, and running into some issues. I started with getting HiveMQ Edge communicating with HiveMQ cloud, and was able to get my simulator talking after some troubleshooting an… --- ## [HiveMQ integration with ERDDAP](https://community.hivemq.com/t/hivemq-integration-with-erddap/3918)
**Author:** [@Ayush](https://community.hivemq.com/u/Ayush)\ **Replies:** 0\ **Last updated:** [August 29, 2025, 6:13pm UTC](https://community.hivemq.com/t/hivemq-integration-with-erddap/3918 "2025-08-29T18:13:04Z")
Hello Hive community. I am not sure if this is the right place to share this(I apologise if it isn’t). As part of GSoC’2025, I worked on integrating MQTT support into ERDDAP which is a scientific data server. We used th… --- ## [Getting started with On-premises installation](https://community.hivemq.com/t/getting-started-with-on-premises-installation/3847)
**Author:** [@technique](https://community.hivemq.com/u/technique)\ **Replies:** 4\ **Last updated:** [August 21, 2025, 8:46am UTC](https://community.hivemq.com/t/getting-started-with-on-premises-installation/3847 "2025-08-21T08:46:15Z")
Hi Everyone, I have spoken with the sales team and I want to make a start with HiveMQ using our Sydney Australia based hosted Bare metal Server. The main aim is to develop an Advanced GPS Tracking solution, which is go… --- ## [STM32 HiveMQ connection issue](https://community.hivemq.com/t/stm32-hivemq-connection-issue/3890)
**Author:** [@cleonb32](https://community.hivemq.com/u/cleonb32)\ **Replies:** 4\ **Last updated:** [August 15, 2025, 10:34pm UTC](https://community.hivemq.com/t/stm32-hivemq-connection-issue/3890 "2025-08-15T22:34:13Z")
Hi all, I am using a custom board with STM32F7. I can connect to a local Mosquito server with certificate and username/password enabled; However, when I try to connect with HiveMQ using the generated Certificate, it is r… --- ## [Unable to connect HiveMQ Edge to OPC UA simulator](https://community.hivemq.com/t/unable-to-connect-hivemq-edge-to-opc-ua-simulator/3888)
**Author:** [@pbodifee](https://community.hivemq.com/u/pbodifee)\ **Replies:** 2\ **Last updated:** [August 13, 2025, 5:28pm UTC](https://community.hivemq.com/t/unable-to-connect-hivemq-edge-to-opc-ua-simulator/3888 "2025-08-13T17:28:56Z")
I am evaluating he HiveMQ Edge (free edition) as a container image on Docker Desktop for Mac. To check out OPC UA connectivity, I am using the free Prosys OPC UA simulator server, which runs straight on Mac OS. I am get… --- ## [Using Android Tablet as MQTT Client](https://community.hivemq.com/t/using-android-tablet-as-mqtt-client/3874)
**Author:** [@technique](https://community.hivemq.com/u/technique)\ **Replies:** 0\ **Last updated:** [August 3, 2025, 10:19pm UTC](https://community.hivemq.com/t/using-android-tablet-as-mqtt-client/3874 "2025-08-03T22:19:57Z")
Hi everyone, Thank you all for your support in the last question I posted. It has opened the inspiration gates for getting this Advanced Telematics technology deployed sooner. I am going to take a dive where I dare say… --- ## [HiveMQ Edge: OPC UA Adapter updates only on data change](https://community.hivemq.com/t/hivemq-edge-opc-ua-adapter-updates-only-on-data-change/3830)
**Author:** [@rkins](https://community.hivemq.com/u/rkins)\ **Replies:** 2\ **Last updated:** [July 10, 2025, 7:29am UTC](https://community.hivemq.com/t/hivemq-edge-opc-ua-adapter-updates-only-on-data-change/3830 "2025-07-10T07:29:22Z")
Hello, I have an issue where I am not sure whether it is expected behavior or not. I recently used the OPC UA adapter from HiveMQ edge to connect to an OPC UA server. I expected the adapter to publish all OPC values ea… --- ## [OCPP Driver Support](https://community.hivemq.com/t/ocpp-driver-support/3823)
**Author:** [@pridesleap](https://community.hivemq.com/u/pridesleap)\ **Replies:** 2\ **Last updated:** [July 3, 2025, 6:27pm UTC](https://community.hivemq.com/t/ocpp-driver-support/3823 "2025-07-03T18:27:50Z")
Has anyone implemented, or is aware of, a HiveMQ Edge implementation where it was communicating with an OCPP network? Im looking for a solution that directly connects to HMQ Edge via a driver and not an intermediate prot… [Next page](https://community.hivemq.com/c/uncategorized/1.md?page=1)