Fix DNS issues in Windows® 7
What are the tips to resolve DNS Issues in Windows 7?
Windows 7 is a powerful operating system and has various features and options to deliver high performance. Many Windows 7 users use Internet to browse websites, check e-mails and chat with dear ones etc. Domain name system or DNS is a service that makes Internet browsing possible. All the webpage that you open through your web browser are loaded on different web servers across the world. Each of the web servers would have an IP address. DNS(Domain Name System) maintains a list of IP address and names of the web servers. When you type in the website address on the web browser, it connects to the DNS server and DNS checks the name of the website that you have typed and re-directs to the respective web server and finally the website loads on the Internet explorer. Some issues can cause with DNS which would either direct you to wrong websites or stops responding to the web browser. If the DNS does not respond to the web browser, it cannot load websites.
Following are the causes and fixes for different DNS issues on Windows 7:
- DNS poisoning
- Network outage
- DNS settings issues
There are many viruses that corrupt the DNS settings and as a result, you are re-directed to malicious websites and you are either prompted to buy a product or you are asked to fill some information. You can run a scan with an updated antivirus program and remove the virus infection. You can try to reset the DNS settings by use a command ‘ipconfig/flushdns’ in the command prompt and restart the computer to reload new DNS settings.
DNS service runs on Internet service providers server, if the server is down or if there is any connectivity issues. The Internet would not work due to DNS issues. You can contact the Internet service provider to get an alternative DNS address or wait till the network issue is fixed. If DNS is running on one of your computers, you need to check if it is running without errors.
Most of the times the computer automatically obtains the DNS address but some Internet service providers would require DNS manual configuration. You can manually type in the DNS address in network properties. If the manually entered address is wrong or if the ISP has changed the address, you might experience DNS issues. So, make sure the DNS address is typed in correctly. Some firewall program also stops your computer connecting to the DNS. If you experience any DNS issue, you can try turning off the firewall and then try to open websites.
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