Hi Dil
Are these errors still happening? Does it only affect specific users? I believe the message is caused by some kind of loss of connection to the server. Does it happen while these users are actively using Hansa? Or when it has been idle for some time? Or when they are in a particular screen or performing a specific function? Are these users on the same local network?
Any extra information you can provide about how your system is set up i.e. where the server and clients are running, operating systems etc. might help to determine the cause.
Regards
Paul