If you are using Internet Explorer:

  1. from the Tools menu, choose “Internet options…”
  2. click on the “connections” tab
  3. click on the [LAN Settings…] button
  4. if the box labelled “Use a proxy server for your LAN“… is ticked (as shown below):

5.  Untick the “Use a proxy server for your LAN“… field.

6. click [OK], and [OK]