How to Fix a DNS Server Error

Domain Name System (DNS) is a vital part of the Internet's workings. Each website address connects to a domain name; for example, Microsoft.com and Yahoo.com are both domain names. IP addresses are actually what we are connecting to on the Internet. DNS was created in order to make webpages easier to access, with each server IP address assigned a domain name. A DNS error occurs when one cannot access the IP address that corresponds with the domain name entered in an Internet browser.

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You can fix a DNS server error.

Step

Clear your Internet browser's browsing history and cookies. In Internet Explorer, start by clicking on “Tools” (in the menu at the top-left of the browser) and navigate to “Internet Options”. This will open the “Internet Options” window.

Step

Click on the “General” tab. Look for “Browsing History; click on the “Delete” button. This will open up a new window. Click “Delete Files”, “Delete Cookies”, and “Delete history”.

Step

Clear your DNS cache. Start by entering the “Start” menu and clicking on “Run”. In the “Run” menu, type in “cmd” (without the quotation marks), and click “OK”. This will open the “Command Prompt” window.

Step

Switch to the “Command Prompt” window and type in “ipconfig /flushdns” (minus the quotation marks), and then press Enter on your keyboard. Wait for the process to complete, and then close the “Command Prompt” window.

Step

Create an exception in your Windows firewall. Start by opening the “Control Panels” window via the “Start” menu. When it is open, navigate to “Windows Security Center”.

Step

Click on “Windows Firewall”. If you receive a message that the firewall is not currently in use, skip the rest of this article. Otherwise, a window dealing with the firewall will open.

Step

Click on the “Exceptions” tab, then click on “Add Program”. This will open up a browser window. In this window will be listed many programs. Find Internet Explorer (sometimes listed as “iexplore”); select it and click “OK”. Then click “OK” again to exit out of the firewall settings window.

Step

Contact your ISP if the above steps do not resolve the problem.