If this works then your browsers do something strange.Īnother note, probably unrelated: Check if you have any strange proxy settings in your Internet Explorer connection settings. You should see the HTML source of this site. If it's still not working try using curl (Windows packages are at the bottom of the page) to see if it is a browser issue: curl You can keep using the Google DNS servers while fixing your own. If yes then your DNS server has some problems. Type this as Administrator: netsh dnsclient set dnsservers name="Name of your Connection" source=static address=8.8.8.8Ĭheck your browsers again and see if things are working now. If it works try to set a static primary DNS server for your connection. If you don't get the same IP for then you may have a problem with your routing/connection or probably some malware. The reply should be something like: Server: ![]() To check for issues with your DNS server, you could try to check if the Google DNS servers are working for you (as already mentioned here): nslookup The instructions below may give you strange results if you still have some malware running. You should really consider reinstalling your OS since the virus may be still there, e.g. You mentioned that you found a virus on your machine. If you get it working, update your security package and do a full scan. In my mind the primary suspects for the behavior you are describing would be malware, a hung security package or - possibly - a windows update gone bad. If it does not work in safe mode with networking, do option 1 above. If it stops working after reenabling something and rebooting, you have found a culprit. If everything works in normal mode after this, you need to go back into msconfig and selectively enable the important things, among these your security package. In the startup tab of msconfig, make a note of all the checked items and disable them. ![]() In the services tab of msconfig, check "Hide all Microsoft services" at the bottom, then make a note of all remaining services and disable them. Open msconfig and have a look at what services and programs are starting on a normal boot. I would do this first, as it performs an entire registry rollback, and then go for the more granular option 2 if this fails. Run Windows system restore and choose the latest known working date among the restore points (check if the restore point descriptions note anything unusual - anything besides "System scheduled checkpoint" could be informative). If it works in safe mode with networking, it tells you there is something loading on normal boot that is interfering, which gives you two options. This is an informative comparison point as Windows starts with only core drivers and services, and no third-party software. Use a wired connection and boot into Safe Mode with Networking (tap F8 on startup for Advanced Boot Options, it will usually be the third option, after Repair Your Computer and Safe Mode). ![]() I don't want to reinstall the whole os, what should I do? Reinstall the driver of network adapter.I tried to do the following things but the fault persist. Windows network diagnosis explain that Windows can't communicate with the device or resource (Primary DNS Server).There are some error information in the event log about dns client events explaining the client can not verify the DNS server available.I can use nslookup and obtain the correct IP info.I can ping myself, the gateway and any other IP, but domains.The DNS server is available, other computer in my room works properly.I can visit websites by using HTTP proxy.IP and DNS obtained automatically, and seems normal (ipconfig /all return the correct info).Whether this computer use a wired link or connect to the WLAN, The fault persists.A computer, with Windows 7, can't access any website by domain suddenly.
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