Spark - Unknown error connection

Hello,

I have installed openfire v4.2.2 on Windows 2012R2. I have installed Spark v2.8.3. I continue to receive a unknown error connection. I am using SSO as well. I have installed Spark on the server and disabled the firewall for testing purposes. I still receive an unknown error connection.

So you are using LDAP integration? Are you able to login with AD user without SSO?