title: windows server 2012 r2 not able to connect network after change ip
body: <p>I am wondering what is wrong with my windows server 2012 r2 standard, use this server to serve as file server only to replace my current windows server 2003 standard edition. </p>
  
  <p>During installation, setup with ip address <code>192.168.103.200</code> and everything ok, after some adjustment and configuration, we decide to take the server to production and change the ip address to the old ip address and power off the old server, which the ip address is <code>192.168.2.2</code>, but after change the ip address, the server is not able to connect to other computers and vice versa. Try to change the ip address to <code>192.168.2.3</code> and everything is working. </p>
  
  <p>Anyone know what could the cause for this issue?</p>