Sometimes you may encounter such a situation, the computer suddenly can not be on the net, or there are some sites could not open the situation, but other sites may open. A lot of this is due to DNS cache latency.
Using commands to clean up DNS caching methods
1, because of the need to use the command, because we first need to pull out the computer's command dialog box, the method is to use the combination of shortcut keys: Windows + R key, open the Run Action box, and then open the following input cmd, finished, click on the bottom of the confirmation can open the cmd command Operation Box,
How to open the cmd command box
2, as shown above, after completing Steps 1 and 2, we can go to the following CMD Command Operation dialog box, as shown below:
cmd Command Action Box
3, empty the DNS cache command: Ipconfig/flushdns, we just enter this command in the command box shown in the following figure:
How to clear the DNS cache use command to clean up the DNS cache method
4, as above, we entered the command, press the computer keyboard on the return key (enter) to start emptying the DNS cache, as shown in the following figure:
Using commands to clean up DNS caching methods
So we have successfully completed the DNS cache cleanup, in fact, is very simple, when our computer is not online, or DNS error can try to clear the DNS cache try. In addition, you can enter the Ipconfig/displaydns command in the above command box to see what DNS information is already cached on this computer.