Microsoft.Speech.Synthesis gives the error “Exception from HRESULT: 0x8004503A”

I create through C # Microsoft.Speech.Synthesis;

SpeechSynthesizer ss = new SpeechSynthesizer(); ss.SetOutputToDefaultAudioDevice ss.Speak("hello"); 

And gives an error

System.IO.FileNotFoundException: "Exception from HRESULT: 0x8004503A"

I took an example from Write a speech synthesis