# Logstash: installing plugin results in certificate verify failed error **URL:** \ **Category:** Logstash\ **Created:** [October 17, 2019, 2:37pm UTC](https://discuss.elastic.co/t/logstash-installing-plugin-results-in-certificate-verify-failed-error/204076 "2019-10-17T14:37:34Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![an.schall](https://avatars.discourse-cdn.com/v4/letter/a/eb9ed0/32.png) [@an.schall](https://discuss.elastic.co/u/an.schall)\ **Post date:** [October 17, 2019, 2:37pm UTC](https://discuss.elastic.co/t/logstash-installing-plugin-results-in-certificate-verify-failed-error/204076/1 "2019-10-17T14:37:34Z")
Hi, I am behind a corporate firewall with SSL interception. As many people here in this forum, I receive an SSL-related error when installing a logstash plugin: `root@kali:/etc/ssl/certs# /usr/share/logstash/bin/logstash-plugin install logstash-input-syslog OpenJDK 64-Bit Server VM warning: Option UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in a future release. WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.headius.backport9.modules.Modules to method java.lang.Object.finalize() WARNING: Please consider reporting this to the maintainers of com.headius.backport9.modules.Modules WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release ERROR: Something went wrong when installing logstash-input-syslog, message: certificate verify failed` I receive a similar error (certificate verify failed) when installing a locally built one (cloned the github repo and guild using gem). I installed my company's root certificate and all intermediate certificates. What else could I try? ---
**Author:** ![an.schall](https://avatars.discourse-cdn.com/v4/letter/a/eb9ed0/32.png) [@an.schall](https://discuss.elastic.co/u/an.schall)\ **Post date:** [October 17, 2019, 3:31pm UTC](https://discuss.elastic.co/t/logstash-installing-plugin-results-in-certificate-verify-failed-error/204076/2 "2019-10-17T15:31:51Z")
Actually, I solved it. After importing the certificate via: ``` cp ~/root.crt /usr/local/share/ca-certificates/EUM/ update-ca-certificates ``` I explicitly defined the certificate to be used for SSL session using the following environment variable: ``` export SSL_CERT_FILE=/etc/ssl/certs/EUM ``` Now it works. ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [November 14, 2019, 3:31pm UTC](https://discuss.elastic.co/t/logstash-installing-plugin-results-in-certificate-verify-failed-error/204076/3 "2019-11-14T15:31:56Z")
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