You may come across this issue in Infor Security Services (ISS): “Server communication failed when trying to add a user.” This usually means that ISS did not respond to your command. Any attempts to add a user yield the following error message: “Server Communication Failed.”
There is a simple solution to this command error. Since it is seemingly a minor technical error, all you need to do is Reboot the LMK server. This will re-establish the connection between Lawson System Foundation (LSF) and LMK. The ISS should respond to your command now and you can proceed to add a new user.