Hi there, I added oozie.authentication.cookie.domain=<domain> to Customer oozie-site and tried this. Doesn't work for me. I finally solved it by installing extjs directly. wget http://archive.cloudera.com/gplextras/misc/ext-2.2.zip Stop Oozie service from Ambari Copy it to the path: /usr/hdp/current/oozie-client/libext Regenerate the war file by executing: $ /usr/hdp/current/oozie-server/bin/oozie-setup.sh prepare-war Start Oozie again Hope this helps. ... View more