SSO not working (Openfire 4.5.2, Spark 2.8.3, Windows AD 2008)

[ilyaHlevnoy]

Hi, please see my guide.
I have AD 2008r2.
But I installed Openfire on Ubuntu.

Openfire SSO Ubuntu guide

Hi, community. The guide below shows how to configure SSO Kerberos with Ubuntu Server 16.04 and 18.04. Java version no higher than Java 8 update 221 and Java 11.0.4. in latest java versions my SSO doesn’t work srvdca3.domain.local-------|AD DC + DNS| srv-chat.domain.local-------|Openfire server 4.5.2| Create a domain user openfire * 1.1.Set it: User cannot change password Password never expires ** Do not require Kerberos preauthentication * 1.2 On any DC, open CMD under the admin and run…