https://community.appian.com/discussions/f/administration/1892/hi-i-m-testing-appian-7-3-with-jboss-eap-6-1-java-1-7-21-i-upHi, I&#39;m testing Appian 7.3 with Jboss EAP 6.1 (java 1.7.21). I updated spring-security-kerberos-core.jar (class: SunJaasKerberosTicketValidator) as suggested in this page: jira.springsource.org/.../SES-119 but SSO with kerberos doesn&#39;t work. I can seeen-USTelligent Community 12https://community.appian.com/thread/7215?ContentTypeID=1Fri, 31 Jan 2014 12:44:00 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:ed3f5b83-cd76-459d-ac79-b81963b9271florenzorWe have find an error into the script. now Kerberos works.<br />Thanks!<div style="clear:both;"></div>https://community.appian.com/thread/7202?ContentTypeID=1Fri, 31 Jan 2014 01:24:10 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:8a657116-d14c-4d02-97c5-674746400dedandrewk370When you create your keytab did you specify the kvno as 0? I used the command ktab.exe -n 0 -a HTTP/USER PASSWORD -k appian.keytab. If the kvno for the ticket and for your keytab differ you will receive that error (after a quick googling)<div style="clear:both;"></div>https://community.appian.com/thread/6705?ContentTypeID=1Mon, 13 Jan 2014 20:49:53 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:ad10dfa7-5bbf-4736-8199-b000c4068845Mike CichyLorenzo, we are not really Kerberos experts and the error you are getting is not an Appian exception. I would suggest that you contact someone internally who has configured Kerberos SSO with their web app.<br />From experience, it seems to me that the version key is different in the keytab file and in the KDC (AD). I believe you can get the keytab version key using klist and the version key from AD using a network monitoring tool.<br />Good luck!<div style="clear:both;"></div>https://community.appian.com/thread/6698?ContentTypeID=1Mon, 13 Jan 2014 17:09:21 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:9a8bd289-36da-42e6-9e2b-0eba0da63696lorenzorHi Patty,<br /><br />I use config files from my old appian version (7.2).<br />I updated in spring-security-07-portal-override.xml as suggested in migration doc.<br />I changed SpringSecurityBeanPostProcessor into BeanPostProcessorForPortalAuth.<br /><br />Authentication with LDAP works fine.<br />only kerberos doesn&#39;t work.<div style="clear:both;"></div>https://community.appian.com/thread/6697?ContentTypeID=1Mon, 13 Jan 2014 17:03:57 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:1846427b-dba2-426f-b12a-f649042d391ePatty IseckePlease ensure that your authentication files are properly configured: <a href="https://forum.appian.com/suite/wiki/73/Authentication">forum.appian.com/.../Authentication</a><br />Do you have a typo in how you&#39;ve configured your LDAP server?<div style="clear:both;"></div>