So you setup windows server 2010 / 2012 task scheduler to run your application and you didn't see anything updated.  However, when you run the application manually and finish successfully. It might many different issue that cause the application not run but you can read this blog as reference to try few way here.

With changing hosts file, you can mapping specific hostname to point to your own ip address, or let hostname to point to specific ip address at your current computer. For example, I want dev-mysite.com to point to my local machine will be following.

Connect to FTP Server by command line.