If you facing network connection issue, or more accurately unable to access or connect to Internet or network problem in Windows Vista, Windows 2003 and in Windows XP, and repair WinSock settings plus workaround for Vista IE7 strange no connection problem do not save your from Internet woes, you can try to reinstall and reset TCP/IP stack or Internet Protocol, one of the core component of the operating system, which cannot be uninstalled.
Again, with a corrupt TCP/IP stack, the same woes may happen – unable to establish a connection to the server, unable to load a web page, unable to browse and surf the Internet, even though network connection to broadband router or wireless router appear to be OK.
When all means run out, try to reinstall the IP stack with NetShell utility. NetShell utility (netsh) is a command-line scripting interface for the configuring and monitoring of Windows XP, 2003 and Windows Vista networking service.
To reinstall and reset the TCP/IP stack (Internet Protocol) to its original state as same as when the operating system was installed in Windows XP and Windows 2003, simply use the following command in command prompt shell. A log file name must be specified where actions taken by netsh will be recorded on newly created or appended if already existed file..
netsh int ip reset [ log_file_name ]
Example:
netsh int ip reset resetlog.txt
For Windows Vista, things work a little different due to introduction of UAC (Guide: Disable UAC). Use this guide to perform a reinstalling of TCP/IP protocol in Vista:
- Click on Windows Vista Start button.
- Type Cmd in the Start Search text box.
- Press Ctrl-Shift-Enter keyboard shortcut to run Command Prompt as Administrator. Allow elevation request.
- Type netsh int ip reset in the Command Prompt shell, and then press the Enter key.
- Restart the computer.
The command will remove all user configured settings on TCP/IP stack in Windows Vista or in XP and return it to original default state by rewriting pertinent registry keys that are used by the Internet Protocol (TCP/IP) stack to achieve the same result as the removal and the reinstallation of the protocol. The Windows registry keys affected are:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\
and
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\DHCP\Parameters\
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