“We can’t get more message right now” Error in Lync 2013 chat room

You are laughing to see the subject line I have used in this post “We can’t get more message right now”. Yes this is one of the error message been reported by one of my Lync 2013 persistent chat user.

He is active member of many chat room and use it very often. Other members of chat room can use the room without any issue. I did lots of research over web and also thought to open case with Microsoft but doing it before i tried something funny.

The error message got by user is below.

I added user as additional manager in the room as below.

User exit lync clients and tried to post message back the chat rooms, all’s started working fine. I am still not sure what is the root cause of this behavior and trying to get it from MS :).