When you try to access the ILO Remote Console on some servers you sometimes get the message “Remote Console is unavailable. It is already in use by a different client”. But there is no other client connected to the ILO on that server. How can you “reset” the Remote Console connection (from remote) to access the server through the ILO again?
Solve the problen by simply going to “Administration -> Settings -> Network -> Apply” (no changes to settings and just applying the current configuration)
It disconnect all connections, you may able to connect the remote console now.