If windows can connect to the network but cannot open the webpage, the server's DNS cannot be resolved.

If windows can connect to the network but cannot open the webpage, the server's DNS cannot be resolved.

First of all, I would like to start with a student who has just completed a computer network course and has completed a network experiment that is known as a difficult level for Stanford, I think I am barely getting started with computer networks and have a clear understanding of tcp, http, routers, switches, lan, Wan, and so on. However, but... Sure enough, the theory should be combined with practice, especially the practical experience in today's complex multi-terminal online world ..

Okay, forgive me for the title that is not consistent with the above, because I have used all possible possibilities and solutions for this computer problem, there is a feeling of poor skill... I 've been suffering for a long time, but, .. Finally, I solved the problem, so let's talk about my solution here. In case someone encounters the same problem as me, don't be so tortured, because the vast majority of methods on the Internet are just different ..

My computer system is win8, and the problem is:

1. Plug in the network cable and display Internet access in the network center. You can log on to the network through the campus network.

2. tcp settings automatically get the IP address and the IP address of the DNS server and the alternative DNS Server

3. query the network details to display the IP address. The DNS server address is obtained correctly.

4. the DNS server is available and confirmed by the roommate's computer

5. After using the free Wi-Fi of the cheetah, the WiFi that is sent out can be connected to the network.

6. ping the gateway. ping the DNS server. ping www.baidu.com.

7. The network speed can be measured by the computer manager.

8. Disable Proxy Server

However ,,,

However ,,,,,

1. Various browsers cannot be opened

2. qq login failure

3. All applications on the computer indicate that the network connection has failed.

,,,,,,

So I started a variety of attempts.

1. Somehow, the first reaction was to restart the computer.

2. the tcp settings of the network center have been confirmed several times.

3. manually set the DNS server and select different DNS servers.

4. Computer Manager, network repair

5. Run the command ipconfig/flushdns in cmd.

6. Remember that I have updated my computer and uninstalled the latest update.

7. control variables ~~~ Unable to connect the cable, I even connect to WiFi, but it's just a breeze.

8. All kinds of Baidu, trying various solutions

9. Crazy... Ranu

10. Finally, I finally found a command (here there should be flowers and applause ):Netsh winsock reset

After winsock is restored to the default state, it is restarted and connected to the network decisively. The reason for the above phenomenon is obvious on the computer. The winsock directory in the computer system is changed, the network configuration is incorrect. Therefore, even if the settings on the computer are not correct, the parameter changes when the winsock and network connection transmission information, resulting in a failure to get the correct response and sending a correct request.

Previously, network programming was not associated with the system, but was directly implemented by the principle. Therefore, windows network programming interfaces were never touched, this time I learned that windows's network programming interface is winsock. The reason why this command is useful is that my computer is not connected to the Internet through the above analysis and tests, it has nothing to do with the network, vro, DNS server, network settings on the computer, and system, therefore, I guess that some of the previously installed malware changed the parameters so that I could not connect to the Internet. However, when this problem occurs, I did not install any software, but only uninstalled a few, among them: itudou, Tudou video, storm audio and video, and Chrome browser... I don't want to study any changes, but I can't unload you if my sister can !! Cool !! The name of rogue software is a waste of time and energy to find problems. Although I will do IT in the future, I must keep my moral bottom line in mind, win applause by technology, not anything else

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