To use the Chat module, you need to have Windows Communication Foundation (WCF) installed and properly configured. Also, there are some licensing limitations to consider.

 

Windows Communication Foundation

 

For description of the whole process of installing and configuring WCF, visit Installation and deployment -> Additional configuration tasks -> Configuring Windows Communication Foundation.

 

Licensing

 

The Chat module is included in the Base license with Social Networking package, Ultimate License and Kentico EMS.