https://community.cloudera.com/t5/Support-Questions/Error-403-Unauthorized-request-in-Solr-Admin-UI/m-p/193853#M155913 <P>Hi, This is related to solr not infra solr.</P><P>We are in process of installing HDP search 4.0 which includes the solr 7.4 service. we have done installation but not able to access the solr UI as it throws below error. Please suggest to disable spnego authentication for solr not infra solr.</P><H2>HTTP ERROR 403</H2><P>Problem accessing /solr/. Reason:</P><PRE> GSSException: Defective token detected (Mechanism level: GSSHeader did not find the right tag)</PRE> Thu, 21 Feb 2019 18:33:44 GMT Moka 2019-02-21T18:33:44Z