If a communication that uses the Web service is encrypted with SSL in your environment, configure SSL communication settings.
How to configure the setting is explained using Web Connection. For details, refer to Here.
In Windows 8.1/10, a communication using the Web service cannot be encrypted using SSL.
When a discovery proxy server is installed to use the WS Scan function in a computer over a subnet, register the discovery proxy server.
The registration process is explained using Web Connection. For details, refer to Here.