If your Citrix VDI Client disconnects due to failure using SDA (Windows), you may see the following errors:
ERROR(1)|rtc.citrix: VDI client disconnected due to a failure, "{\"event\":\"vdiClientDisconnected\",\"reason\":\"failure\",\"msg\":\"Websocket Connection Failure\"}"
websocket connection error: error
Unable to connect to websocket service!
To fix this issue, you will need to modify the Citrix VD registry key as described in the Citrix VD registry key modification chapter of the SDA Installation Guide.