# Broker connection disconnected

**URL:** <https://community.hivemq.com/t/broker-connection-disconnected/3103>\
**Category:** MQTT\
**Created:** [August 16, 2024, 10:06am UTC](https://community.hivemq.com/t/broker-connection-disconnected/3103 "2024-08-16T10:06:01Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![sai](https://avatars.discourse-cdn.com/v4/letter/s/ecd19e/32.png) [@sai](https://community.hivemq.com/u/sai)\
**Post date:** [August 16, 2024, 10:06am UTC](https://community.hivemq.com/t/broker-connection-disconnected/3103/1 "2024-08-16T10:06:01Z")

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When i am using MQTT Version 5. I ams getting error. Unsupported protocol TLS\_SSL.

COuld anyone guide me to get out of this solution.

i am using HiveMQ cloud

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**Author:** ![Daria\_H](https://avatars.discourse-cdn.com/v4/letter/d/dfb087/32.png) [@Daria\_H](https://community.hivemq.com/u/Daria_H)\
**Post date:** [August 16, 2024, 10:20am UTC](https://community.hivemq.com/t/broker-connection-disconnected/3103/2 "2024-08-16T10:20:39Z")

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Welcome to the community, Sai! 🎉

It looks like you’re encountering an “Unsupported protocol TLS\_SSL” error when using an unspecified MQTT client with MQTT Version 5 on HiveMQ Cloud.

To troubleshoot this issue, consider clarifying the following:

1. **MQTT Client:** Identify which MQTT client you are using. Ensure it supports MQTT Version 5 and is configured correctly.
2. **Version Compatibility:** Test if the error also occurs with MQTT Version 3, as this might help pinpoint if the issue is specific to Version 5.
3. **Authentication:** Verify whether you have set up a username and password for your MQTT clients to access HiveMQ Cloud.

These steps should help you diagnose the problem more effectively.

Best,  
Dasha from the HiveMQ Team