At the original bug a fix was implemented to add a servicePrincipalName to the ucs-sso user on school replica servers. However, there is a check around that functionality: if [ $JS_LAST_EXECUTED_VERSION -lt 5 ]; then ... Simply re-executing the joinscript will not fix the missing SPN issue if present. The check should be removed. 62ucs-school-nonedu-slave.inst 62ucs-school-slave.inst +++ This bug was initially created as a clone of Bug #51078 +++