Issues

• arduino PubSubClient retain flag is always set

  knolleary/pubsubclient#1093 · Filter by author Hans-Zwiesel opened on Jul 4, 2026
  1

• Communicate with ESP32 PubSubClient (subscriber) to the things network mqtt broker (with any other applications)?

  knolleary/pubsubclient#1088 · Filter by author martinmmi opened on Nov 20, 2025
  1

• Publishing and callback() not working properly

  knolleary/pubsubclient#1087 · Filter by author ChetanDevre27 opened on Nov 6, 2025
  1

• Soft WDT reset on MQTT connect

  knolleary/pubsubclient#1086 · Filter by author lafrank opened on Oct 16, 2025
  4

• Frequent Reconnections on ESP32

  knolleary/pubsubclient#1085 · Filter by author xzbit22 opened on Sep 24, 2025
  3

• The broker plays a connection and reboots (ESP32)

  knolleary/pubsubclient#1081 · Filter by author butaikis opened on Jul 1, 2025
  7

• Messages stop coming after a few hours

  knolleary/pubsubclient#1079 · Filter by author devifast opened on Apr 6, 2025
  2

• issue in the publish function

  knolleary/pubsubclient#1078 · Filter by author jogueji opened on Apr 2, 2025
  1

• setServer(domain, ...) dangerous/dangling string pointer?

  knolleary/pubsubclient#1077 · Filter by author binary1230 opened on Feb 21, 2025
  4

• Network Connection broken every other time thru the loop

  knolleary/pubsubclient#1073 · Filter by author BigDurl opened on Feb 2, 2025

• ESP restarts on MQTT.connect

  knolleary/pubsubclient#1072 · Filter by author nygma2004 opened on Jan 25, 2025
  5

• Length calculation wrong; buffer overrun ?

  knolleary/pubsubclient#1071 · Filter by author dirkx opened on Dec 29, 2024

• Calling SPI.beginTransaction() before calling connect() will cause the connection to fail

  knolleary/pubsubclient#1070 · Filter by author goddade opened on Dec 12, 2024

• connect by hostname - not working

  knolleary/pubsubclient#1069 · Filter by author quax1 opened on Nov 28, 2024

• Cannot connect to MQTT broker running on the same ESP32 (PicoMQTT)

  knolleary/pubsubclient#1068 · Filter by author fredlcore opened on Nov 23, 2024
  3

• Panic on publish

  knolleary/pubsubclient#1067 · Filter by author rwb196884 opened on Oct 31, 2024
  1

• Is subscribe broken?

  knolleary/pubsubclient#1065 · Filter by author rwb196884 opened on Aug 27, 2024
  9

• guru mediation error when you cannot connect to broker

  knolleary/pubsubclient#1063 · Filter by author Tntceria opened on Jul 12, 2024

• Delay or lag in sending messages at a rate of 30ms or lower

  knolleary/pubsubclient#1062 · Filter by author programmeddeath1 opened on Jul 9, 2024

• Can't connect to my hiveq server from arduino using ESP8266

  knolleary/pubsubclient#1061 · Filter by author ghost opened on Jul 3, 2024

• Intermittent Disconnects with TinyGSM + SSLClient + PubSubClient during MQTT Ping

  knolleary/pubsubclient#1060 · Filter by author k3341095 opened on Jun 26, 2024
  1

• [MQTTPINGREQ] lastOutActivity is not set when replying to ping req.

  knolleary/pubsubclient#1059 · Filter by author TD-er opened on Jun 24, 2024

• pubsub library not thread safe.

  knolleary/pubsubclient#1055 · Filter by author jonasbjurel opened on Apr 30, 2024
  8

• Can't Connect to mqtt broker after including SPI.h

  knolleary/pubsubclient#1052 · Filter by author cresusjpt opened on Apr 17, 2024

• #error "This library only supports boards with an AVR, SAM, SAMD, NRF52 or STM32F4 processor."

  knolleary/pubsubclient#1049 · Filter by author byte21516 opened on Apr 3, 2024
  1