Hello, I have JAX-RS service secured by Keycloak. It works fine on Wildfly 8-10 and Glassfish 4. But on Tomee 7.0.1 async methods throws NullPointerException (sync works fine). I have created simple project for test on tomee 7.0.1 combination sync/async + keycloak and here is results: 1. no keycloak + sync = ok 2. no keycloak + async = ok 3. keycloak + sync = ok 4. keycloak + async = error Method signature sample: @GET public void findAll(@Suspended AsyncResponse response) Exception stacktrace: java.lang.NullPointerException org.apache.cxf.jaxrs.impl.AsyncResponseImpl.initContinuation( AsyncResponseImpl.java:305) org.apache.cxf.jaxrs.impl.AsyncResponseImpl.<init>( AsyncResponseImpl.java:68) org.apache.cxf.jaxrs.utils.JAXRSUtils.processParameter( JAXRSUtils.java:816) org.apache.cxf.jaxrs.utils.JAXRSUtils.processParameters( JAXRSUtils.java:789) org.apache.cxf.jaxrs.interceptor.JAXRSInInterceptor.processRequest( JAXRSInInterceptor.java:212) org.apache.cxf.jaxrs.interceptor.JAXRSInInterceptor.handleMessage( JAXRSInInterceptor.java:77) org.apache.cxf.phase.PhaseInterceptorChain.doIntercept( PhaseInterceptorChain.java:308) org.apache.cxf.transport.ChainInitiationObserver.onMessage( ChainInitiationObserver.java:121) org.apache.cxf.transport.http.AbstractHTTPDestination.invoke( AbstractHTTPDestination.java:254) org.apache.openejb.server.cxf.rs.CxfRsHttpListener.doInvoke( CxfRsHttpListener.java:251) org.apache.tomee.webservices.CXFJAXRSFilter.doFilter( CXFJAXRSFilter.java:94) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) org.apache.openejb.server.httpd.EEFilter.doFilter(EEFilter.java:65) private void initContinuation() { ContinuationProvider provider = (ContinuationProvider)this. inMessage.get(ContinuationProvider.class.getName()); *this.cont = provider.getContinuation();* this.initialSuspend = true; } How this issue can be resolved? May be this is tomcat adapter bug? Best regards, Ilia