Users unable to connect to OpenFire with Trillian Pidgin

hello,

we have an open fire jabber machine running on windows 64 bit.

up until recently, Trillian and Pidgin users could connect to chat using their AD credentials.

now, somethings changed and neither Trillian or Pidgin users can connect. Trillian get the Jabber/Xmpp disconnected.

Pidgin users get input/output error.

All Spark users can connect.

I checked the client control management and its set to allow all clients.

please help and let me know if there is anything else that needs to be done.

we’ve stopped/started Open fire service and even rebooted a few times.