title: Credentials for the SQL Server Agent service are invalid
body: <p>I'm trying to install SQL Server 2008 development server on my local machine as administrator.</p>
  
  <p>During the installation I receive this error, any idea how to solve it?thanks</p>
  
  <blockquote>
    <p><em>[Error Message]<br>
    The credentials you provided for the SQL Server Agent service are invalid. To continue, provide a valid account and password for the SQL
    Server Agent service.</em></p>
    
    <p><em>[Details]
    Microsoft.SqlServer.Configuration.Agent.InputValidationException: The credentials you provided for the SQL Server Agent service are
    invalid. To continue, provide a valid account and password for the SQL
    Server Agent service.</em></p>
  </blockquote>