Hi Jim, thanks for your prompt answer.   Here my answers:   1) what do the logs say? nothing relevant, just the illegal argument exception, for example:     2022-09-08 16:15:42,386 WARN  server.AuthenticationFilter (AuthenticationFilter.java:doFilter(608)) - Authentication exception: java.lang.IllegalArgumentException   2)Thanks for the information provided, but I am not able to identify if the config is ok or not. One important thing perhaps to mention is that the Yarn Server is in one domain (let´s call it A) but the user authentication is done to a different domain (let´s call it B). For what I see in the headers, the server side and the client side are making reference of domain A, which makes sense, but I can´t identify in which moment the illegal argument comes up   3) the domain controllers were deprecated, and we had to reconfigure the Kerberos information by the servers in the Cluster plus run the Ambari Ldap Setup to make reference to the new DC. We did not modify anything regarding Yarn, Oozie or the other services.   Thanks for your help, Jesus   ... View more