Internet Information Services (IIS) 
The Isah Time Registration Service is installed within Windows' Internet Information Services (IIS). For this reason, IIS needs to be enabled on the server. The following Windows components are necessary and must be enabled:
.NET Framework 4.x Advanced Services > WCF Services:HTTP Activation TCP Activation TCP Port Sharing  Internet Information Services > World Wide Web Services > Application Development Features:.NET Extensibility 4.x ASP.NET 4.x Application Initialization  Internet Information Services > World Wide Web Services > Web Management Tools: After you have enabled the Windows components, follow these steps:
Install Application Request Routing  from the Microsoft website. Start IIS. Go to the Connections  pane and select the server. In the Server  pane, double-click Application Request Routing Cache . In the Actions  pane, click Server Proxy Settings . On the Application Request Routing  page, activate Enable proxy . Press Apply  in the column on the right.