# Latest **URL:** https://community.hivemq.com/latest.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 … --- ## [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 … --- ## [Mosquitto broker to HiveMq connection issues](https://community.hivemq.com/t/mosquitto-broker-to-hivemq-connection-issues/4057)
**Author:** [@andyc1](https://community.hivemq.com/u/andyc1)\ **Replies:** 10\ **Last updated:** [July 11, 2026, 11:01am UTC](https://community.hivemq.com/t/mosquitto-broker-to-hivemq-connection-issues/4057 "2026-07-11T11:01:10Z")
I am running Mosquitto broker in Home Assistant. I had previously successfully connected a bridge to HiveMQ and was receiving the subscribed messages (visible in HiveMQ web client). I made some changes to the structure o… --- ## [Connecting my Server pc with public ip to Hive Cloud MQBroker](https://community.hivemq.com/t/connecting-my-server-pc-with-public-ip-to-hive-cloud-mqbroker/4060)
**Author:** [@Parvathy](https://community.hivemq.com/u/Parvathy)\ **Replies:** 1\ **Last updated:** [July 9, 2026, 9:11pm UTC](https://community.hivemq.com/t/connecting-my-server-pc-with-public-ip-to-hive-cloud-mqbroker/4060 "2026-07-09T21:11:52Z")
Hi I’m trying to connect my server PC to a HiveMQ Cloud broker over MQTT/TLS (port 8883). However, the connection is timing out. To troubleshoot, I tried retrieving the server certificate using: openssl s\_client -conn… --- ## [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… --- ## [Exception while decoding PUBACK: fixed header flags must be 0 but were 8](https://community.hivemq.com/t/exception-while-decoding-puback-fixed-header-flags-must-be-0-but-were-8/4016)
**Author:** [@Boris](https://community.hivemq.com/u/Boris)\ **Replies:** 2\ **Last updated:** [April 14, 2026, 4:00pm UTC](https://community.hivemq.com/t/exception-while-decoding-puback-fixed-header-flags-must-be-0-but-were-8/4016 "2026-04-14T16:00:55Z")
Hi, The server runs on wss.certigo.com:443 I can connect to this server using org.eclipse.paho.client.mqttv3.MqttClient I want to migrate to hivemq client library. I receive this log when connect to the server wss.c… --- ## [Message ordering guarantees in a cluster of brokers at failover](https://community.hivemq.com/t/message-ordering-guarantees-in-a-cluster-of-brokers-at-failover/4014)
**Author:** [@venhufezu](https://community.hivemq.com/u/venhufezu)\ **Replies:** 1\ **Last updated:** [April 10, 2026, 2:06pm UTC](https://community.hivemq.com/t/message-ordering-guarantees-in-a-cluster-of-brokers-at-failover/4014 "2026-04-10T14:06:56Z")
Hello, We are having a cluster of HiveMQ brokers with a load balancer in front of it and replica count \> 1. Our clients are using QoS 1 and persistent sessions. For one topic we need ordering guaranties. We have one pu… --- ## [How to force an immediate connection attempt on Android?](https://community.hivemq.com/t/how-to-force-an-immediate-connection-attempt-on-android/4000)
**Author:** [@eehouse](https://community.hivemq.com/u/eehouse)\ **Replies:** 1\ **Last updated:** [April 8, 2026, 10:30am UTC](https://community.hivemq.com/t/how-to-force-an-immediate-connection-attempt-on-android/4000 "2026-04-08T10:30:49Z")
"I am using hivemq-mqtt-client:1.3.12 on Android (for a turn-based game.) When the OS blocks the connection (e.g., background restrictions), the client enters DISCONNECTED\_RECONNECT. My issue is that when the user bring… --- ## [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… --- ## [SIM7600E-H Connection Error](https://community.hivemq.com/t/sim7600e-h-connection-error/3990)
**Author:** [@Gareth](https://community.hivemq.com/u/Gareth)\ **Replies:** 5\ **Last updated:** [March 25, 2026, 6:35am UTC](https://community.hivemq.com/t/sim7600e-h-connection-error/3990 "2026-03-25T06:35:59Z")
Hi I have been trying on and off for quite some time to connect the 7600E-H to HiveMQ without success. Tried just about everything I can think of as well as trawling the internet. I get error 6 "6 message receive fail… --- ## [Problems with hivemq in the background on Android](https://community.hivemq.com/t/problems-with-hivemq-in-the-background-on-android/3992)
**Author:** [@erik\_bby](https://community.hivemq.com/u/erik_bby)\ **Replies:** 2\ **Last updated:** [March 18, 2026, 9:17pm UTC](https://community.hivemq.com/t/problems-with-hivemq-in-the-background-on-android/3992 "2026-03-18T21:17:53Z")
We’ve had problems with running the hivemq client in the background on android in a foreground service. Our service is running as a location foreground service, and it reliably wakes up and does stuff when we get a locat… --- ## [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 … --- ## [Can't get to HiveMQ download page](https://community.hivemq.com/t/cant-get-to-hivemq-download-page/4003)
**Author:** [@strickb](https://community.hivemq.com/u/strickb)\ **Replies:** 1\ **Last updated:** [March 12, 2026, 12:41pm UTC](https://community.hivemq.com/t/cant-get-to-hivemq-download-page/4003 "2026-03-12T12:41:12Z")
I am trying to download the HiveMQ Broker .zip file but when I click download it takes me to the email logon. I enter my email and password and it sends me straight to my Cloud Cluster. Is there another way to get to the… --- ## [HiveMQ Web Client Will not connect to Cluster](https://community.hivemq.com/t/hivemq-web-client-will-not-connect-to-cluster/4002)
**Author:** [@strickb](https://community.hivemq.com/u/strickb)\ **Replies:** 5\ **Last updated:** [March 11, 2026, 7:10pm UTC](https://community.hivemq.com/t/hivemq-web-client-will-not-connect-to-cluster/4002 "2026-03-11T19:10:08Z")
I am getting this error when trying to use my HiveMQ Web Client. (Connection Refused Unable to connect to the cluster. It may still be starting up, please try again in a few minutes) It has been working fine for a coupl… --- ## [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": { … --- ## [Overlapping subcriptions trigger exponentially on flowables](https://community.hivemq.com/t/overlapping-subcriptions-trigger-exponentially-on-flowables/3995)
**Author:** [@splitframe](https://community.hivemq.com/u/splitframe)\ **Replies:** 2\ **Last updated:** [February 5, 2026, 2:42pm UTC](https://community.hivemq.com/t/overlapping-subcriptions-trigger-exponentially-on-flowables/3995 "2026-02-05T14:42:10Z")
Edit: At first I assumed the wildcard subscription was shadowing the specific one, with further testing and a test project I noticed that the shadowing was actually just the specific messages arriving late, there is anot… --- ## [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 … --- ## [\[SIM7000G\] MQTTS Connection to HiveMQ Cloud Fails with ERROR on AT+SMCONN](https://community.hivemq.com/t/sim7000g-mqtts-connection-to-hivemq-cloud-fails-with-error-on-at-smconn/3978)
**Author:** [@jsh110218](https://community.hivemq.com/u/jsh110218)\ **Replies:** 2\ **Last updated:** [January 5, 2026, 1:18am UTC](https://community.hivemq.com/t/sim7000g-mqtts-connection-to-hivemq-cloud-fails-with-error-on-at-smconn/3978 "2026-01-05T01:18:35Z")
Hello everyone, I am working with a SIM7000G module and trying to establish a secure MQTT connection (MQTTS) to HiveMQ Cloud. I have followed the official SIMCom MQTT(S) Application Note, but I am encountering an “ERROR… --- ## [MQTT via IPv6 on broker.hivemq.com](https://community.hivemq.com/t/mqtt-via-ipv6-on-broker-hivemq-com/3951)
**Author:** [@GeorgBraunHM](https://community.hivemq.com/u/GeorgBraunHM)\ **Replies:** 3\ **Last updated:** [December 29, 2025, 8:46am UTC](https://community.hivemq.com/t/mqtt-via-ipv6-on-broker-hivemq-com/3951 "2025-12-29T08:46:40Z")
Dear HiveMQ Team, I am using \`broker.hivemq.com\` for my IoT lecture at Hochschule München. Thanks a lot for providing this public, free-of-charge service. When the FQDN \`broker.hivemq.com\` is resolved to IP-Adresses vi… --- ## [Cannot connect to LDAP server and no messages in access log](https://community.hivemq.com/t/cannot-connect-to-ldap-server-and-no-messages-in-access-log/3969)
**Author:** [@rgn\_ppaul](https://community.hivemq.com/u/rgn_ppaul)\ **Replies:** 1\ **Last updated:** [December 11, 2025, 10:01am UTC](https://community.hivemq.com/t/cannot-connect-to-ldap-server-and-no-messages-in-access-log/3969 "2025-12-11T10:01:20Z")
Hi, We are using ldap to provide authentication and authorization for control center access. I have removed the DISABLED file in the hivemq-extensions folder to enable access and have configured the "config.xml" file … --- ## [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… --- ## [Extension to HiveMQ when running as a service](https://community.hivemq.com/t/extension-to-hivemq-when-running-as-a-service/3947)
**Author:** [@arscroggin](https://community.hivemq.com/u/arscroggin)\ **Replies:** 1\ **Last updated:** [November 27, 2025, 8:54am UTC](https://community.hivemq.com/t/extension-to-hivemq-when-running-as-a-service/3947 "2025-11-27T08:54:09Z")
We are running Hive MQ as a service along with several other services. We have a service that starts after HiveMQ starts, but that service still fails to connect. Of course we can add retries. But instead of polling, a b… [Next page](https://community.hivemq.com/latest.md?page=1)