Faced with a strange issue: button Enable Kerberos does not do anything. Such strange behavior started after previously successfully lunched wizard was interrapted with browser timeout.
What are the versions of HDP & Ambari? Is it a test cluster if so can you go through a fresh install, this looks bizarre I am wondering if you are missing some steps?
Can you walk me through your install steps and the Kerberos setup procedure? Do you see kerberos related errors in the ambari logs?