/subsystem=elytron/server-ssl-context=server-ssl-context1:add /subsystem=elytron/server-ssl-context=server-ssl-context1:write-attribute(name=cipher-suite-filter,value="ab") should fail reload errors in server log 13:19:15,855 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-4) MSC000001: Failed to start service org.wildfly.security.ssl-context.server-ssl-context1: org.jboss.msc.service.StartException in service org.wildfly.security.ssl-context.server-ssl-context1: Failed to start service at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1919) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) Caused by: java.lang.IllegalArgumentException: ELY05016: Unrecognized token "ab" in mechanism selection string "ab" at org.wildfly.security.ssl.CipherSuiteSelector.fromString(CipherSuiteSelector.java:423) at org.wildfly.extension.elytron.SSLDefinitions$3.lambda$getValueSupplier$1(SSLDefinitions.java:510) at org.wildfly.extension.elytron.TrivialService.start(TrivialService.java:53) at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1963) at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1896) ... 3 more ... 13:19:15,923 ERROR [org.jboss.as.controller.management-operation] (Controller Boot Thread) WFLYCTL0013: Operation ("add") failed - address: ([ ("subsystem" => "elytron"), ("server-ssl-context" => "server-ssl-context1") ]) - failure description: { "WFLYCTL0080: Failed services" => {"org.wildfly.security.ssl-context.server-ssl-context1" => "org.jboss.msc.service.StartException in service org.wildfly.security.ssl-context.server-ssl-context1: Failed to start service Caused by: java.lang.IllegalArgumentException: ELY05016: Unrecognized token \"ab\" in mechanism selection string \"ab\""}, "WFLYCTL0412: Required services that are not installed:" => ["org.wildfly.security.ssl-context.server-ssl-context1"], "WFLYCTL0180: Services with missing/unavailable dependencies" => undefined }