Please follow the steps below to resolve this issue: 
  1. Open Windows Explorer
  2. Navigate to [Drive]:\WINDOWS\system32\drivers\etc
  3. Double click on the Host file to open in Notepad
  4. Add or correct the host file entry to the internal IP address for example:          # source server
  5. Save the file
  6. Go to Start, Run, and type in cmd to open the Command prompt
  7. Type in ipconfig /flushdns and press enter
  8. Type in  ipconfig /registerdns and press enter