What we need to reproduce the issue is a domain mode environment with a master and slave where the slave is using an RBAC user for its authentication. We have to have a reconnection with a model out of sync, that can be achieved setting the DC in admin-only mode, executing a management operation that affects to the HC or the Servers, bringing back the DC. The HC is unable to connect in that scenario. Create a management user which will be used for DC / HC authentication ./bin/add-user.sh -u admin -p admin -ds Edit host-slave.xml and : Replace the existing secret the for ManagementRealm security with the one generated for the user admin Add the attribute username="admin" in the domain-controller/remote endpoint Start the DC: bin/domain.sh --host-config=host-master.xml Start the HC: bin/domain.sh --host-config=host-slave.xml -Djboss.domain.master.address=127.0.0.1 -Djboss.management.native.port=19999 -Djboss.domain.base.dir=slave Enable RBAC for the user 'admin': /core-service=management/access=authorization:write-attribute(name=provider,value=rbac) /core-service=management/access=authorization/role-mapping=SuperUser/include=ManagementRealm:add(name=admin,type=USER) Remove the local authentication: /host=master/core-service=management/security-realm=ManagementRealm/authentication=local:remove /host=slave/core-service=management/security-realm=ManagementRealm/authentication=local:remove Restart HC and DC Reload the DC in admin-only mode reload --host=master --admin-only Change the domain model, for example modifying the jvm configuration used in a server group /server-group=main-server-group/jvm=default:write-attribute(name=heap-size, value=500m) Reload the DC reload --host=master --admin-only These messages are shown in the DC: [Host Controller] 13:07:17,931 INFO [org.jboss.as.protocol] (management I/O-2) WFLYPRT0057: cancelled task by interrupting thread Thread[Host Controller Service Threads - 13,5,Host Controller Service Threads] These messages are shown in the HC: 13:21:05,009 ERROR [org.jboss.as.host.controller] (Host Controller Service Threads - 9) WFLYHC0143: Failed to apply domain-wide configuration from master host controller. Operation outcome: failed. Failure description "WFLYCTL0313: Unauthorized to execute operation 'server-set-restart-required' for resource '[]' -- \"WFLYCTL0332: Permission denied\"" 13:21:05,012 WARN [org.jboss.as.host.controller] (Host Controller Service Threads - 3) WFLYHC0146: Could not discover master using discovery option StaticDiscovery{protocol=remote,host=127.0.0.1,port=9999}. Error was: 1-$- 13:21:05,012 WARN [org.jboss.as.host.controller] (Host Controller Service Threads - 3) WFLYHC0147: No domain controller discovery options remain. 13:21:06,015 INFO [org.jboss.as.host.controller] (Host Controller Service Threads - 3) WFLYHC0150: Trying to reconnect to master host controller. These messages in the server-one: 13:21:04,829 ERROR [org.jboss.as.controller.management-operation] (ServerService Thread Pool -- 67) WFLYCTL0013: Operation ("server-set-reload-required") failed - address: ([]) - failure description: "WFLYCTL0313: Unauthorized to execute operation 'server-set-reload-required' for resource '[]' -- \"WFLYCTL0332: Permission denied\"" 13:21:05,006 ERROR [org.jboss.as.controller.management-operation] (ServerService Thread Pool -- 67) WFLYCTL0013: Operation ("server-set-restart-required") failed - address: ([]) - failure description: "WFLYCTL0313: Unauthorized to execute operation 'server-set-restart-required' for resource '[]' -- \"WFLYCTL0332: Permission denied\""