How to reinstall the TCP/IP protocol

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Sometimes computers in the LAN cannot connect to the network and cannot get the IP address, but running ipconfig/release and ipconfig/renew prompts "an operation was attempted on a non-socket". It is likely that the TCP/IP protocol has been broken and the TCP/IP protocol needs to be reinstalled. However, in the properties of the local connection, the uninstall button for TCP/IP is not available. What should I do?

1. Start-run-enter "regedit", open the registry editor, and delete the following two keys:

HKEY_LOCAL_MACHINESystemCurrentControlSetServicesWinsock

HKEY_LOCAL_MACHINESystemCurrentControlSetServicesWinsock2

2. Open the C:WINDOWSinfnettcpip.inf file with notepad and find:

[MS_TCPIP.PrimaryInstall]

Characteristics = 0xA0