Hi, yesterday we have merged patch [1], which bumps master/4.2 engine requirements to WildFly 11. Please upgrade and test, we need find possible regressions as soon as possible so they can be fixed until WildFly 11 GA. We don't plan to use WildFly 11 in oVirt 4.1.z, but it should be backward compatible with WildFly 10, so you should be able to use it for oVirt 4.1 backports development. Packages ovirt-engine-wildfly-11.0.0 and ovirt-engine-wildfly-overlay-11.0.0 are available on ovirt-master-snapshot repository [2] as usual. Thanks Martin [1] https://gerrit.ovirt.org/80722 [2] http://plain.resources.ovirt.org/pub/yum-repo/ovirt-release-master.rpm