# Elasticsearch version 6.8.6 oss unable to start **URL:** \ **Category:** Elasticsearch\ **Created:** [January 13, 2020, 11:37pm UTC](https://discuss.elastic.co/t/elasticsearch-version-6-8-6-oss-unable-to-start/214918 "2020-01-13T23:37:06Z")\ **Posts on this page:** 1\ **Showing post:** 3
**Author:** ![jw-ovgd](https://avatars.discourse-cdn.com/v4/letter/j/ecb155/32.png) [@jw-ovgd](https://discuss.elastic.co/u/jw-ovgd)\ **Post date:** [January 14, 2020, 7:03pm UTC](https://discuss.elastic.co/t/elasticsearch-version-6-8-6-oss-unable-to-start/214918/3 "2020-01-14T19:03:59Z")
Hi Christian I'll be driving this for Brandon today. Can you elaborate on why this is not expected to work? We think this should work just fine. We are using the OSS 6.8.6 RPM downloaded from here: [https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-oss-6.8.6.rpm](https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-oss-6.8.6.rpm) Previously, we were using the OSS 6.5.4 RPM downloaded from here: [https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-oss-6.5.4.rpm](https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-oss-6.5.4.rpm) We are not trying to perform any kind of upgrade on Elasticsearch. We are taking our base SW product and installing the OSS 6.8.6 RPM on top of it which worked just fine with OSS 6.5.4 We have never used Xpack or any other security plugin for Elasticsearch. We see this keystore exception thrown everytime Elasticsearch attempts to start. The only things I have found online relating to this are: > > [@Oracle vs Open JDK version](https://discuss.elastic.co/t/oracle-vs-open-jdk-version/144553/2): > > you can also try with openjdk, see [https://www.elastic.co/support/matrix#matrix\_jvm](https://www.elastic.co/support/matrix#matrix_jvm) note the minimum recommended versions > [@SSL KeyStoreException on X-Pack 5.1.1 installation (RHEL)](https://discuss.elastic.co/t/ssl-keystoreexception-on-x-pack-5-1-1-installation-rhel/70611): > > I have a development cluster made up of 3 nodes. I installed Elasticsearch 5.1.1 on all 3, and Kibana 5.1.1 on just the first one. Installing X-Pack for ES and Kibana on node 1 worked fine and the services started back up again. I managed to hit the login screen and successfully authenticated with the default credentials. However, the ES service fails to start on the other 2 nodes. I'm seeing: org.elasticsearch.bootstrap.StartupException: ElasticsearchException[Failed to load plugin class [org… Which seem to suggest it is an OracleJDK vs OpenJDK problem. As Brandon described we are using OpenJDK and have no way currently of using OracleJDK, but the support matrix states that OpenJDK is supported for this version of Elasticsearch. --- _[View the full topic](https://discuss.elastic.co/t/elasticsearch-version-6-8-6-oss-unable-to-start/214918)._