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In the days before Windows XP, a corrupted IP installation could often be
fixed simply by removing and reinstalling TCP/IP. In most cases, the IP-related
files remained intact, but some related Registry keys would be corrupted beyond
repair.
You can't uninstall TCP/IP in Windows XP, because there is no Uninstall
button for this protocol. According to Microsoft, that is because TCP/IP is an
integral part of the operating system, and removing it would cause major
problems. You can, however, use the Windows XP command line utility NetShell to
reset all IP-related Registry settings to their default values. The result is a
brand-new TCP/IP configuration.
The Netsh.exe program is located in the C:\Windows\System32 directory. To use
the program, enter the command
netsh int ip reset filename
You must specify a filename, such as Ipstuff.txt. After Netsh.exe runs, the
file will contain a detailed log of the Registry keys that were modified.
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