CredentialStore, set own security provider through java security config file leads to NoClassDefFoundError for custom implementation class ------------------------------------------------------------------------------------------------------------------------------------------ Key: WFLY-8296 URL: https://issues.jboss.org/browse/WFLY-8296 Project: WildFly Issue Type: Bug Components: Security Reporter: Hynek Švábek When I want to define own Custom Elytron Provider through modification of Java security provider configuration I got exception about NoClassDefFoundError on CustomImplementation class. But this class is located in same jar file as Custom Elytron Provider. I need it to define provider-name in credential-store. Is there some additional step which I missed? Jar file is attached and it is same one as here https://issues.jboss.org/browse/JBEAP-8238 from [~pskopek]