window cannot communicate device or resoucres primary dns server for window 7

window cannot coommunicate device or resource [main dns server] .dns server is not responding.internet coonectivity has been lost.

Hello

When you get the message DNS server responds not?

You can approach this problem in two ways: first by simply disabling the cache, but also by restarting DNS client service, which manages the cached DNS queries.

Method 1

Clear DNS Cache

(a) click Startand then type cmd in the Start Search box.

(b) right click on cmd in the programs list and then click run as administrator. If you are prompted for an administrator password or a confirmation, type your password or click continue.

(c) at the command prompt, type the following line and press ENTER:

ipconfig/flushdns

Usually, it clears up any issue that may occur.

Method 2

Restart the Service DNS service

(a) click Start, clickrun, type services.msc, and then clickOK.

(b) double-click the DNS Client service. If you receive a Configuration Manager message, click OK.

(c) in the Startup Type list, click on restart and then clickOK.

(d) Community Services.

(e) restart the computer.

Method 3

Configure the connection to obtain an IP address automatically.

(a) click on 'Start', enter 'NCPA.» CPL"(sans guillemets) in the Start Search bar and press"Enter"."

(b) right click on the network connection, and then click "Properties". If you are prompted for an administrator password or a confirmation, type the password or provide confirmation.

(c) highlight "Internet Protocol Version 6 (TCP/IPv6)" and click 'properties '.

(d) check "obtain an IP address automatically" and "Obtain DNS server address automatically".

(e) click on 'OK '.

(f) click Select 'Protocol Internet Version 4 (TCP/IPv4)' and then click 'properties '.

(g) check "obtain an IP address automatically" and "Obtain DNS server address automatically".

(h) click on 'OK '.

(i) restart the computer.

Check this link for more information:

To reset TCP/IP stack to go to this article and follow the instructions.
http://support.Microsoft.com/kb/299357

Registry warning: To do: Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems can occur if you modify the registry incorrectly. Therefore, make sure that you proceed with caution. For added protection, back up the registry before you edit it. Then you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click on the number below to view the article in the Microsoft Knowledge Base:

How to back up and restore the registry in Windows

http://support.Microsoft.com/kb/322756

Why can't I connect to the Internet?
http://Windows.Microsoft.com/en-us/Windows7/why-can-t-I-connect-to-the-Internet

Hope this information is useful.

Tags: Windows

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