Class java.net.HttpClient not found in Wildfly 17 ------------------------------------------------- Key: WFLY-12290 URL: https://issues.redhat.com/browse/WFLY-12290 Project: WildFly Issue Type: Bug Components: Class Loading Affects Versions: 17.0.1.Final Environment: Development: Win 10, JDK 11, Eclipse 2019-06 Reporter: André Kornetzky Assignee: Richard Opalka Priority: Minor Labels: Modules, jdk11 Fix For: 19.0.0.Final When I deploy my war module, I get the following error: Caused by: java.lang.ClassNotFoundException: java.net.http.HttpClient from [Module "deployment.webservice-impl-1-3.0.0.war" from Service Module Loader] In the same environment is also a Wildfly 16.0.0 installed. There the war module starts without errors. In the discussion on https://developer.jboss.org/message/990207?et=watches.email.thread#990207 it was said that this was not considered by the upgrading of the JBoss module: https://github.com/wildfly/wildfly-core/commit/fc649ab01eff81c55084d241fb...