# MQTTfx Invalid Keystore Format

**URL:** <https://community.cumulocity.com/t/mqttfx-invalid-keystore-format/5822>\
**Category:** Forum\
**Tags:** mqtt, cumulocity\
**Created:** [August 15, 2022, 11:13am UTC](https://community.cumulocity.com/t/mqttfx-invalid-keystore-format/5822 "2022-08-15T11:13:39Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![PARA](https://avatars.discourse-cdn.com/v4/letter/p/d9b06d/32.png) [@PARA](https://community.cumulocity.com/u/PARA)\
**Post date:** [August 15, 2022, 11:13am UTC](https://community.cumulocity.com/t/mqttfx-invalid-keystore-format/5822/1 "2022-08-15T11:13:39Z")

</div>

Hello,

I’m following the Device Integration using MQTT guide( /guides/device-sdk/mqtt/#install-and-configure-the-mqtt-client ) and am currently struggling with connecting to MQTTfx using Self Signed Certificates in Keystores. I was following the guide 1to1 even using the same names and MQTTfx version. Yet when I try to connect I get the error message: Invalid Keystore Format.

Do you guys have any idea?

---

<div class="post-metadata">

**Author:** ![system](https://dub1.discourse-cdn.com/flex005/user_avatar/community.cumulocity.com/system/32/31990_2.png) [@system](https://community.cumulocity.com/u/system)\
**Post date:** [February 11, 2023, 11:13am UTC](https://community.cumulocity.com/t/mqttfx-invalid-keystore-format/5822/2 "2023-02-11T11:13:56Z")

</div>

This topic was automatically closed 180 days after the last reply. New replies are no longer allowed.