Resetting the TCP/IP stack in Windows can resolve various network connectivity issues. The TCP/IP stack is a set of network protocol layers that work together to manage network communications. Sometimes, these settings can become corrupted or misconfigured, leading to connectivity problems. The "netsh int ip reset" command is a powerful tool in Windows that allows users to reset the TCP/IP stack to its default state. This article provides a step-by-step guide on how to execute this command via the Command Prompt (CMD).

Step-by-Step Guide to Reset TCP/IP

Prerequisites:

• Administrator privileges on the Windows machine.
• Access to the Command Prompt.

Instructions:

1. Open Command Prompt as Administrator:

   • Click on the "Start" menu.
   • Type cmd in the search bar.
   • Right-click on "Command Prompt" and select "Run as administrator."

2. Execute the Reset Command:

   • In the Command Prompt window, type the following command and press Enter:

     netsh int ip reset

   • This command will reset the TCP/IP stack to its default configuration. It rewrites the following registry keys used by TCP/IP:
     • SYSTEM\CurrentControlSet\Services\Tcpip\Parameters
     • SYSTEM\CurrentControlSet\Services\DHCP\Parameters

3. Reboot the Computer:

   • After running the command, restart your computer to apply the changes.

4. Verify Network Connectivity:

   • After rebooting, check your network connection to ensure that the issue has been resolved. You can do this by opening a web browser and accessing a website or by using the ping command in CMD to test connectivity to a known address (e.g., ping google.com).

Examples:

• Example 1: Basic Reset

  netsh int ip reset

• Example 2: Reset with Log File

  • You can create a log file to review what changes were made:

    netsh int ip reset c:\resetlog.txt

  • This command will reset the TCP/IP stack and save the log of changes to resetlog.txt in the C: drive.

Troubleshooting:

• If you encounter an error stating "The requested operation requires elevation," ensure that you are running the Command Prompt as an administrator.
• If network issues persist after resetting TCP/IP, consider checking other network settings or hardware issues.