No reply from global DNSand loop back address-cannot go online

This post is the continuation of the previous post where you cannot go online and cannot communicate with global DNS server. To get continuation of the topic I recommend you to read the given below post first and then come back.

Cannot go online-Basic troubleshooting steps


In this post I am describing the troubleshooting steps where you are not able to ping loop back address.

If I am getting reply from loop back address

The possible reasons for cannot ping loop back address are:


1. The TCP/IP suit of the computer is corrupt
2. Ethernet adapter is not working

To fix the issue with TCP/IP suit on your computer use the follwing commands on your computer(at dos prompt).

ipconfig /flushdns

netsh int ip reset c:\tcp.txt

netsh winsock reset

After resetting the windows socket and TCP/IP suit we need to restart our computer. After restarting the computer we need to check whether the issue persist or not. If still we cannot ping the loop back address the only possible chance is corrupted Ethernet Adapter and we need to change it.