When attempting to login to Web Client the below error is seen.
“The communication object, System.ServiceModel.Channels.ServiceChannel, cannot be used for communication because it is in the Faulted state."
The typical cause of this error is a mismatch in the security bindings between the SOAP Service and the Security Expert Data Service. For example if you enable the Windows Authentication checkbox in the Security Expert installer but not in the SOAP Service installer (or vice versa) then you have a mismatch.
Either uninstall the SOAP service and update the checkbox selection to match whatever was selected in the Security Expert installer, or follow the instructions on page 27 of the SX-WEB Web Client Installation Manual.pdf for editing the config files of the SOAP service to match the Security Expert Data Service.