title: Failing to execute google cloud Speech API
body: <p>I have registered on Google cloud platform went through the  authentication steps and created the required JSON as suggested <a href="https://github.com/GoogleCloudPlatform/dotnet-docs-samples/tree/master/speech/api" rel="nofollow noreferrer">here</a>.
  On downloading the Google cloud SDk(requirement for setting up environment variable) and trying to install the installation fails my Os is win 7 64-bit.
  On trying to set environment directly(My computer>advance settings> environment variable) and running the code mentioned in given link I get the error as please check value of environment variable Google_Application_credential
  <a href="https://i.stack.imgur.com/fSdME.png" rel="nofollow noreferrer">error Image</a></p>
  
  <p>error Message:- </p>
  
  <blockquote>
    <p>system.InvalidOperationException: Error reading credential file from
    location. please check the value of the environment variable
    GOOGLE_APPLICATION_CREDENTIALS at
    Google.Apis.Auth.OAuth2.defaultcredentialprovider</p>
  </blockquote>
  
  <p>Please help!</p>