Need Help With Uninstalling Tcp/ip Protocol Winxp

Hi, just ran into a problem today when I was working with a computer with internet problems. This computer is using Windows XP Pro with SP2 installed.I solved the problem already (was a bad LAN port in the wall) but one thing has puzzled me and I want to know the reason behind it. For some reason I can't uninstall the TCP/IP protocol in 'Local Area Connection' Properties...The Uninstall button is grayed out. I wanted to uninstall it and install it back originally to make sure it's not a problem there.I have checked to make sure this user has ALL admin priveleges. I even logged in as the Administrator in Safe Mode with Networking to be sure. I checked the permissions in Local Users and Groups and it all looks ok there. It's a member of Administrators.So what is the reason behind this? How can I uninstall TCP/IP if I encounter this problem again?Thanks.

Yes, you cannot uninstall Internet Protocal in Windows XP.
The Uninstall button is disabled when you select Internet
Protocol (TCP/IP) for a network interface. The TCP/IP is
a core component of the Windows XP.
It is not possible to uninstall TCP/IP in Windows XP.

However, there is a reset command(in NetShell utility) is available
for reset IP . This command rewrites the releavence registry keys and
has the same result as removal and the reinstallation of the protocol.

for more details, please visit this page
https://support.microsoft.com/en-us

Thanks for the info jedipi. Should have used Google on this I usually go there first before asking...Good to know how it works. Gives me a piece of mind