If you are using Application Enabler in the Web Client, you must have Desktop Host installed to access full functionality. For more information on installing Desktop Host, see the Desktop Host installation sections in the Web Server module reference guide.
If you are using Application Enabler to retrieve documents in the Web Client, you must have the Microsoft Edge WebView2 Runtime installed. For more information on installing the WebView2 Runtime, see the Unity Client prerequisites section in the Installation Requirements manual.