# Slack connection failed with no reason. Error: javax.net.ssl.SSLHandshakeException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target

**URL:** <https://forum.katalon.com/t/slack-connection-failed-with-no-reason-error-javax-net-ssl-sslhandshakeexception-pkix-path-building-failed-sun-security-provider-certpath-suncertpathbuilderexception-unable-to-find-valid-certification-path-to-requested-target/80894>\
**Category:** Integrations\
**Tags:** plugins\
**Created:** [November 23, 2022, 9:15am UTC](https://forum.katalon.com/t/slack-connection-failed-with-no-reason-error-javax-net-ssl-sslhandshakeexception-pkix-path-building-failed-sun-security-provider-certpath-suncertpathbuilderexception-unable-to-find-valid-certification-path-to-requested-target/80894 "2022-11-23T09:15:52Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![bharathi.a](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/bharathi.a/32/24695_2.png) [@bharathi.a](https://forum.katalon.com/u/bharathi.a)\
**Post date:** [October 17, 2023, 5:23pm UTC](https://forum.katalon.com/t/slack-connection-failed-with-no-reason-error-javax-net-ssl-sslhandshakeexception-pkix-path-building-failed-sun-security-provider-certpath-suncertpathbuilderexception-unable-to-find-valid-certification-path-to-requested-target/80894/3 "2023-10-17T17:23:02Z")

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@syamimi.adenan

This is due to a security certificate issue you have to add the certificate to the slack Url you are using a

1. download the certificate from the Slack and follow my workaround here

in the below thread i added it for remote but u can use the same to download the certificate from slack

> [@Unable to start application when try to do object spy in remote device](http://forum.katalon.com/t/unable-to-start-application-when-try-to-do-object-spy-in-remote-device/99177/5):
>
> Got a solution for this issue after spending my whole day. After spending a day, I did it phew. Solution: After updating/installing (now katalon is downloading as an exe) to the new katalon version in the JRE file under the C:\Users\userName.katalon\packages\Katalon\_Studio\_Windows\_64-8.6.8\Katalon\_Studio\_Windows\_64-8.6.8\jre\lib\security\cacerts SSL Certificate is missing To add that if you are using lambda test/ Pcloudy/ Browser stack/Kobiton/sauce labs you need to add the certificate to …

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