# Failed to load plugin class \[org.elasticsearch.xpack.core.XPackPlugin **URL:** \ **Category:** Elastic Security\ **Created:** [September 10, 2020, 1:11pm UTC](https://discuss.elastic.co/t/failed-to-load-plugin-class-org-elasticsearch-xpack-core-xpackplugin/248169 "2020-09-10T13:11:45Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![JB06](https://avatars.discourse-cdn.com/v4/letter/j/8edcca/32.png) [@JB06](https://discuss.elastic.co/u/JB06)\ **Post date:** [September 10, 2020, 1:11pm UTC](https://discuss.elastic.co/t/failed-to-load-plugin-class-org-elasticsearch-xpack-core-xpackplugin/248169/1 "2020-09-10T13:11:45Z")
Hello, Version "7.8.0" I use this command /usr/share/elasticsearch/bin/elasticsearch-certutil cert ca --pem --silent -in /var/tmp/instance.yml --out /var/tmp/certs.zip --pass $PASSWORD I copy result in /etc/elasticsearch/conf. did chmod 666 on all files. Configure elasticsearch.yml with those files. here is the part for security I also tried with relative path xpack.security.enabled: true xpack.security.transport.ssl.enabled: true xpack.security.transport.ssl.verification\_mode: certificate xpack.security.transport.ssl.key: /etc/elasticsearch/conf/elktdata-0.key xpack.security.transport.ssl.certificate: /etc/elasticsearch/conf/elktdata-0.crt xpack.security.transport.ssl.certificate\_authorities: ["/etc/elasticsearch/conf/ca.crt"] I open the crt in windows and it does not look corrupt. here is the stack trace ```auto "stacktrace": ["java.lang.IllegalStateException: failed to load plugin class [org.elasticsearch.xpack.core.XPackPlugin]", "at org.elasticsearch.plugins.PluginsService.loadPlugin(PluginsService.java:614) ~[elasticsearch-7.2.1.jar:7.2.1]", "at org.elasticsearch.plugins.PluginsService.loadBundle(PluginsService.java:556) ~[elasticsearch-7.2.1.jar:7.2.1]", "at org.elasticsearch.plugins.PluginsService.loadBundles(PluginsService.java:471) ~[elasticsearch-7.2.1.jar:7.2.1]", "at org.elasticsearch.plugins.PluginsService.(PluginsService.java:163) ~[elasticsearch-7.2.1.jar:7.2.1]", "at org.elasticsearch.node.Node.(Node.java:307) ~[elasticsearch-7.2.1.jar:7.2.1]", "at org.elasticsearch.node.Node.(Node.java:251) ~[elasticsearch-7.2.1.jar:7.2.1]", "at org.elasticsearch.bootstrap.Bootstrap$5.(Bootstrap.java:221) ~[elasticsearch-7.2.1.jar:7.2.1]", "at org.elasticsearch.bootstrap.Bootstrap.setup(Bootstrap.java:221) ~[elasticsearch-7.2.1.jar:7.2.1]", "at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:349) [elasticsearch-7.2.1.jar:7.2.1]", "at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:159) [elasticsearch-7.2.1.jar:7.2.1]", "at org.elasticsearch.bootstrap.Elasticsearch.execute(Elasticsearch.java:150) [elasticsearch-7.2.1.jar:7.2.1]", "at org.elasticsearch.cli.EnvironmentAwareCommand.execute(EnvironmentAwareCommand.java:86) [elasticsearch-7.2.1.jar:7.2.1]", "at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:124) [elasticsearch-cli-7.2.1.jar:7.2.1]", "at org.elasticsearch.cli.Command.main(Command.java:90) [elasticsearch-cli-7.2.1.jar:7.2.1]", "at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:115) [elasticsearch-7.2.1.jar:7.2.1]", "at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:92) [elasticsearch-7.2.1.jar:7.2.1]", "Caused by: java.lang.reflect.InvocationTargetException", "at jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:?]", "at jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) ~[?:?]", "at jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[?:?]", "at java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500) ~[?:?]", "at java.lang.reflect.Constructor.newInstance(Constructor.java:481) ~[?:?]", "at org.elasticsearch.plugins.PluginsService.loadPlugin(PluginsService.java:605) ~[elasticsearch-7.2.1.jar:7.2.1]", "... 15 more", "Caused by: java.lang.IllegalStateException: Error parsing Private Key from: /etc/elasticsearch/conf/elktdata-0.key", "at org.elasticsearch.xpack.core.ssl.PemUtils.readPrivateKey(PemUtils.java:107) ~[?:?]", "at org.elasticsearch.xpack.core.ssl.PEMKeyConfig.readPrivateKey(PEMKeyConfig.java:97) ~[?:?]", "at org.elasticsearch.xpack.core.ssl.PEMKeyConfig.createKeyManager(PEMKeyConfig.java:58) ~[?:?]", "at org.elasticsearch.xpack.core.ssl.SSLService.createSslContext(SSLService.java:383) ~[?:?]", "at java.util.HashMap.computeIfAbsent(HashMap.java:1133) ~[?:?]", "at org.elasticsearch.xpack.core.ssl.SSLService.loadSSLConfigurations(SSLService.java:434) ~[?:?]", "at org.elasticsearch.xpack.core.ssl.SSLService.(SSLService.java:119) ~[?:?]", "at org.elasticsearch.xpack.core.XPackPlugin.(XPackPlugin.java:143) ~[?:?]", "at jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:?]", "at jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) ~[?:?]", "at jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[?:?]", "at java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500) ~[?:?]", "at java.lang.reflect.Constructor.newInstance(Constructor.java:481) ~[?:?]", "at org.elasticsearch.plugins.PluginsService.loadPlugin(PluginsService.java:605) ~[elasticsearch-7.2.1.jar:7.2.1]", "... 15 more", "Caused by: javax.crypto.BadPaddingException: Given final block not properly padded. Such issues can arise if a bad key is used during decryption.", "at com.sun.crypto.provider.CipherCore.unpad(CipherCore.java:975) ~[?:?]", "at com.sun.crypto.provider.CipherCore.fillOutputBuffer(CipherCore.java:1056) ~[?:?]", "at com.sun.crypto.provider.CipherCore.doFinal(CipherCore.java:853) ~[?:?]", "at com.sun.crypto.provider.DESedeCipher.engineDoFinal(DESedeCipher.java:294) ~[?:?]", "at javax.crypto.Cipher.doFinal(Cipher.java:2208) ~[?:?]", "at org.elasticsearch.xpack.core.ssl.PemUtils.possiblyDecryptPKCS1Key(PemUtils.java:366) ~[?:?]", "at org.elasticsearch.xpack.core.ssl.PemUtils.parsePKCS1Rsa(PemUtils.java:257) ~[?:?]", "at org.elasticsearch.xpack.core.ssl.PemUtils.readPrivateKey(PemUtils.java:93) ~[?:?]", "at org.elasticsearch.xpack.core.ssl.PEMKeyConfig.readPrivateKey(PEMKeyConfig.java:97) ~[?:?]", "at org.elasticsearch.xpack.core.ssl.PEMKeyConfig.createKeyManager(PEMKeyConfig.java:58) ~[?:?]", "at org.elasticsearch.xpack.core.ssl.SSLService.createSslContext(SSLService.java:383) ~[?:?]", "at java.util.HashMap.computeIfAbsent(HashMap.java:1133) ~[?:?]", "at org.elasticsearch.xpack.core.ssl.SSLService.loadSSLConfigurations(SSLService.java:434) ~[?:?]", "at org.elasticsearch.xpack.core.ssl.SSLService.(SSLService.java:119) ~[?:?]", "at org.elasticsearch.xpack.core.XPackPlugin.(XPackPlugin.java:143) ~[?:?]", "at jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:?]", "at jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) ~[?:?]", "at jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[?:?]", "at java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500) ~[?:?]", "at java.lang.reflect.Constructor.newInstance(Constructor.java:481) ~[?:?]", "at org.elasticsearch.plugins.PluginsService.loadPlugin(PluginsService.java:605) ~[elasticsearch-7.2.1.jar:7.2.1]", "... 15 more"] } ``` When I run /usr/share/elasticsearch/bin/elasticsearch-plugin list repository-azure ---
**Author:** ![Frank\_Hassanabad](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/frank_hassanabad/32/49255_2.png) [@Frank\_Hassanabad](https://discuss.elastic.co/u/Frank_Hassanabad)\ **Post date:** [September 10, 2020, 4:44pm UTC](https://discuss.elastic.co/t/failed-to-load-plugin-class-org-elasticsearch-xpack-core-xpackplugin/248169/2 "2020-09-10T16:44:13Z")
> [@JB06](#): > > `Error parsing Private Key from: /etc/elasticsearch/conf/elktdata-0.key` That part and this part look interesting: ```auto Given final block not properly padded. Such issues can arise if a bad key is used during decryption. ``` It is looking like something might be wrong with the key you provided. ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [November 4, 2022, 8:12am UTC](https://discuss.elastic.co/t/failed-to-load-plugin-class-org-elasticsearch-xpack-core-xpackplugin/248169/3 "2022-11-04T08:12:53Z")