To resolve network connectivity issues in Windows, reset the TCP/IP stack by first opening Command Prompt as Administrator, then running the command netsh int ip reset, and finally restarting your computer to apply changes; if issues persist, optionally run netsh winsock reset and reboot again, as this process safely restores core network components without affecting saved Wi-Fi passwords or profiles.

Resetting the TCP/IP stack in Windows can help resolve network connectivity issues, such as inability to access the internet, intermittent connection drops, or misconfigured network settings. This process rewrites the core networking components to their default state. Here’s how to do it properly.

Open Command Prompt as Administrator

To reset TCP/IP, you need elevated privileges.

• Press Windows S, type cmd.
• Right-click on Command Prompt and select Run as administrator.
• If prompted by User Account Control (UAC), click Yes.

Note: You can also use PowerShell with admin rights, but the commands are slightly different.

Run the Reset Command

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

netsh int ip reset

This command resets the TCP/IP stack to default settings. It may take a few seconds.
After it completes, you’ll see a message like:
"Resetting Interface [interface name]...OK"
"Resetting Winsock...Successful"
"Resetting TCB...Failed" — this is normal and not a critical error.

The command creates a log file at C:\Windows\System32\logfiles\NetSetup\NetSetup.log if you need to review details later.

Restart Your Computer

After running the reset command:

• Close the Command Prompt.
• Restart your computer.

This step is essential because the changes take effect after a reboot.

Why restart? Some network services and drivers reload during startup. Skipping the reboot may leave old configurations active.

Optional: Reset Winsock (if problems persist)

If you're still having network issues, also reset the Winsock catalog:

netsh winsock reset

Run this in the same admin Command Prompt, then reboot again.

This clears any corrupted socket entries that might interfere with connectivity.

Resetting TCP/IP doesn’t affect your saved Wi-Fi passwords or network profiles. It only resets low-level network protocols. If the issue continues after resetting TCP/IP and Winsock, consider checking your router, drivers, or ISP connection.

Basically, it’s a safe and effective troubleshooting step — not complex, but often overlooked.

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