# Elasticsearch WARN message after upgrade 8.19.2 to 8.19.3

**URL:** <https://discuss.elastic.co/t/elasticsearch-warn-message-after-upgrade-8-19-2-to-8-19-3/381460>\
**Category:** Elasticsearch\
**Created:** [August 30, 2025, 3:09am UTC](https://discuss.elastic.co/t/elasticsearch-warn-message-after-upgrade-8-19-2-to-8-19-3/381460 "2025-08-30T03:09:51Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![DavidTurner](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/davidturner/32/22453_2.png) [@DavidTurner](https://discuss.elastic.co/u/DavidTurner)\
**Post date:** [August 30, 2025, 7:53am UTC](https://discuss.elastic.co/t/elasticsearch-warn-message-after-upgrade-8-19-2-to-8-19-3/381460/2 "2025-08-30T07:53:01Z")

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> [@kalai](#):
>
> com.dynatrace.agent

The Dynatrace agent isn’t supported and we recommend not using it. See the warning in [these docs](https://www.elastic.co/docs/deploy-manage/deploy/self-managed/installing-elasticsearch#jvm-version) for more information:

> **WARNING:** Don’t use third-party Java agents that attach to the JVM. Such agents can be harmful to Elasticsearch stability and performance. In some cases they may cause nodes to freeze, crash, or fail to start up, or to lose or corrupt your data.

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_[View the full topic](https://discuss.elastic.co/t/elasticsearch-warn-message-after-upgrade-8-19-2-to-8-19-3/381460)._