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How to Remove Outdated DNS Settings

by tcids — last modified Apr 17, 2017 10:59 AM

Most home users should have the DNS set to "Obtain automatically".  Internet connections can slow down or stop if outdated DNS numbers are in the network settings.

Windows XP

  1. From the Start button, click on the Control Panel.
  2. Double-click Network Connections.
  3. Double-click the Local Area Network, or Wireless Network Connection if using wireless.
  4. On the General tab, Click the Properties button.
  5. Click to highlight Internet Protocol (TCP/IP), then click the properties button below. (Leave checkbox checked.)
  6. "Obtain an IP address automatically", and "Obtain DNS server address automatically" should both be selected.
  7. Click OK, and close to close the dialogue boxes. Close the Control Panel.
  8. Close all programs, then shut down and reboot the computer.

WINxpDNS

Windows Vista

  1. From the Start button, click on the Control Panel.
  2. Double-click Network and Sharing Center.
  3. On the left, click Manage Network Connections.
  4. Double-click your Local Area Connection, or Wireless Network Connection if using wireless.
  5. Click Continue if a Permissions box pops up to continue.
  6. On the General tab, click the Properties button.
  7. Click to highlight Internet Protocol Version 4 (TCP/IPv4) then click the properties button below. (Leave checkbox checked.)
  8. "Obtain an IP address automatically", and "Obtain DNS server address automatically" should both be selected.
  9. Click OK, and close to close the dialogue boxes. Close the Control Panel.
  10. Close all programs, then shut down and reboot the computer.
    vistaChangeDNS.jpg

 

Windows 7

  1. From the Start button, click on the Control Panel.
  2. Click Network and Sharing Center.
  3. On the left, click Change Adapter Settings or Manage Network Connections.
  4. Double-click your Local Area Connection, or Wireless Network Connection if using wireless.
  5. Click Continue if a Permissions box pops up to continue.
  6. On the General tab, Click the Properties button.
  7. Click to highlight Internet Protocol Version 4 (TCP/IPv4), then click the Properties button below. (Leave checkbox checked.)
  8. "Obtain an IP address automatically", and "Obtain DNS server address automatically" should both be selected.
  9. Click OK, and close to close the dialogue boxes. Close the Control Panel.
  10. Close all programs, then shut down and reboot the computer.

win7dnsv2-jpg

MAC OS X

  1. Click on the Apple Menu.
  2. Click System Preferences.
  3. Click on the Network icon.

For Ethernet connections:

  1. Select Ethernet.
  2. Remove any IP numbers in the DNS Server field if they are present.
  3. Click the Advanced button.
  4. Under the TCP/IP tab, Using DHCP should be in the field for Configure IPv4.
  5. Click the DNS tab. If IP numbers other than 8.8.8.8 or 8.8.4.4 are present, click to highlight the numbers and click the (-) button below the box.
  6. Click the Apply button, and close the network preferences.

For Wireless:

  1. Select Airport.
  2. Click the Advanced button.
  3. Under the TCP/IP tab, and select Using DHCP in the field for Configure IPv4.
  4. Click the DNS tab. If IP numbers other than 8.8.8.8 or 8.8.4.4 are present, click to highlight the numbers and click the (-) button below the box.  (Advanced users may select other DNS, if knowledgeable about DNS.)
  5. Click the Apply button, and close the network preferences.