Ipconfig: Unable to query Host Name

When ipconfig is run in cmd, the IP address is not displayed, and an error message is displayed. One of the prompts is
Unable to query Host Name

In this case, the network adapter is normal, but the Internet access is not allowed because tcpip. sys is lost or damaged. The solution is different.

Tcpip. sys loss: Make sure the TCPIP cannot be found in system32 \ drivers. sys, the solution is to extract a TCPIP from the i386 directory of the installation disc. sys -- use WinRAR to open tcpip. sy _ and extract it to the System32 \ DRIVERS directory, or copy a TCPIP from another host. sys to system32 \ drivers and restart.

Damaged tcpip. SYS: delete tcpip. sys in system32 \ drivers and restart it. It will be automatically created for backup.