Not able to access Sharepoint O365 list from my Local System

Question

I want to access sharepoint list from my local machine VS2012 using CSOM but getting The remote server returned an error: (401) Unauthorized. error message

 

My Code:

using Microsoft.SharePoint.Client;
using System;
using System.Security;
using System.Configuration;
namespace SP_Console
{
class Program
{
static void Main(string[] args)
{
ClientContext clientContext = new ClientContext("http://sphkcl.sharepoint.com/");
clientContext.Credentials = new SharePointOnlineCredentials(GetSPOAccountName(), GetSPOSecureStringPassword());
// Get the SharePoint web
Web web = clientContext.Web;
// Get the SharePoint list collection for the web
ListCollection listColl = web.Lists;
// Retrieve the list collection properties
clientContext.Load(listColl);
clientContext.ExecuteQuery();
// Loop through all the list
foreach (List list in listColl)
{
// Display the list title and ID
Console.WriteLine("List Name: " + list.Title + "; ID: " + list.Id);
}
Console.ReadLine();
}
private static SecureString GetSPOSecureStringPassword()
{
try
{
var secureString = new SecureString();
foreach (char c in ConfigurationManager.AppSettings["SPPass"])
{
secureString.AppendChar(c);
}
return secureString;
}
catch
{
throw;
}
}
private static string GetSPOAccountName()
{
try
{
return ConfigurationManager.AppSettings["SPAccount"];
}
catch
{
throw;
}
}
}
}

I have added username and password in app.config.

<appSettings>
<add key="SPAccount" value="[email protected]"/>
<add key="SPPass" value="*********"/>
</appSettings>