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1st Published, Jan.  2007

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DNS and DNS cache (DNS Flush Error).

When you use the Internet, you log to a site by its URL name (like www.BUY.com). 

The naming scheme was done to make it easier for people to identify and remember the Sites.  In reality, each Site name has an IP address (Internet Protocol address), which is a number on a database that is maintained by the Internet supervisors, and the actual surfing it done by the number.  As an Example www.BUY.com actually goes around as

DNS (Domain Name service), is the data base that translates the name BUY.com to the IP number

Your Internet Service Provider (ISP) is usually providing an automatic access to their DNS data base while your are surfing.

Windows can keep the IP address of the sites that you visit, so when you visit them the second time the number is readily available.

It is done through a running service called DNS Client.

At times, this cache of numbers might end up with incorrect numbers or other mistakes, and can cause surfing troubles.

In case of trouble, the DNS cache can be cleaned by doing the following.

Click Start and Run, in the Run Box type cmd and click OK.

At the prompt of the open Command Box type, ipconfig/flushdns

If every thing were OK, you would get the message,

Successfully flushed the DNS Resolver Cache.

In addition, the DNS cache is flushed as part of repairing the Network’s TCP/IP Stack

If instead of Successful Flushing you get the message indicated that, the DNS could be Flushed.

Take a look at Windows Services; make sure the DNS Client Service is running.

Look at this page it explains how to set WZC use the same method to set the DNS Client Service, set it to Start Automatically with Windows.



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