Help with SSO

I have installed Openfire on several servers for different companies, but all running the same basic setup:

Windows Server 2003

Openfire 3.6.3

Spark 2.5.8

On the most recent installation I can not use SSO and I get the following error in info.log

User Login Failed. Failure to initialize security context

I can’t seem to find any differences in the setup.

I used these instructions: http://www.igniterealtime.org/community/docs/DOC-1362

Config files are attached

openfire.xml contained:

GSSAPI

HOME.LOCAL

true

C:/Program Files/Openfire/conf/gss.conf

false

which was moved to the DB (MySLQ if it matters)
openfire.xml (2358 Bytes)
gss.conf (315 Bytes)