When encountering an "Ethernet does not have valid IP configuration" error, it is usually caused by the computer being unable to obtain the correct IP address from the router. 1. You can repair it by running the network troubleshooting tool that comes with Windows. The specific operation is to right-click the network icon in the lower right corner of the taskbar and select "Troubleshooting" to allow the system to automatically detect and repair common problems. Although this method cannot solve all failures, it is effective for basic setup errors or minor driver problems.

If you encounter the error "Ethernet does not have a valid IP configuration", it usually means that your computer cannot obtain the correct IP address from the router or network. This problem is more common in Windows systems and may affect normal Internet access. The solution is actually not complicated. Below are some practical troubleshooting and repair steps.

1. Restart the router and computer

Many times, the problem is just temporary network exceptions. You can try first:

• Turn off the router and wait for 30 seconds before powering on again
• Restart your computer at the same time

This step can refresh the network connection status and in many cases it can automatically solve the problem. Because the IP allocated by DHCP (Dynamic Host Configuration Protocol) may expire or conflict, it will be re-acquisitioned after restart.

2. Run the network troubleshooting tool

Windows comes with a network troubleshooting tool that can automatically detect and fix some common problems:

• Right-click on the network icon in the lower right corner of the taskbar
• Select Troubleshooting
• Let the system automatically check and try to repair

Although it doesn't solve all the problems, it is quite helpful for some basic setup errors or driver problems.

3. Reset TCP/IP and Winsock settings

If the above method is useless, it may be a problem with the network protocol stack. You can try to reset the relevant settings through the command prompt:

Open a command prompt (administrator permissions), and then enter the following commands:

 netsh int ip reset
netsh winsock reset

After execution, restart the computer. These two commands are used to reset the TCP/IP protocol and Winsock settings, respectively, and are suitable for connection problems caused by protocol corruption.

4. Manually set the IP address (temporary emergency)

If you are anxious to surf the Internet and are not sure what the problem is, you can try manually setting an IP address:

• Open Control Panel > Network and Internet > Network and Sharing Center
• Click the currently connected Ethernet
• Click "Properties" > Double-click "Internet Protocol Version 4 (TCP/IPv4)"
• Select "Use the following IP address" and fill in:
  • IP address: 192.168.1.100
  • Subnet mask: 255.255.255.0
  • Default gateway: usually 192.168.1.1 (see the router for details)
  • DNS server address: fill in 8.8.8.8 or 114.114.114.114

This method is used for temporary emergency purposes, and it is recommended to restore it to "automatically obtain IP address" for long-term use.

5. Update or rollback the network card driver

Sometimes problems with the network card driver can also lead to this error. You can try:

• Press Win X and select Device Manager
• Expand Network Adapter
• Right-click your network card and select "Update Driver" or "Rolleate Driver"

If no update is available, you can also download the latest driver installation on the official website.

Basically these commonly used methods. Most of the time, the first two steps can solve the problem; if it doesn't work, gradually check the subsequent settings and driver problems. The operation is not complicated, but some details are easily overlooked. For example, the subnet mask or gateway is written incorrectly when setting the IP address manually, which may also cause problems to persist.

The above is the detailed content of How to resolve 'Ethernet doesn't have a valid IP configuration' in Windows?. For more information, please follow other related articles on the PHP Chinese website!