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Windows Vista

Disable IPv6

Unlike in Windows XP, IPv6 in Windows Vista cannot be uninstalled. To disable IPv6 on a specific connection complete the following steps:

1. Click the Windows logo located at the bottom left of the screen, and select Network (located on the right hand side of menu).

   

2. Double click on Network and Sharing Center (along the top panel).

   

3. Click the View Status link.

   

4. The Local Area Connection Status dialogue box will be displayed. Click the Properties button.

   

5. You will be prompted by UAC (User Access Control) prompt asking either to supply the username and password for an administrative user or you will not be allowed to continue.

6. Next you will be faced with a Local Area Connection Properties dialogue box. Firstly under This connection uses the following items: ensure that Internet Protocol Version 6 (TCP/IPv6) is not checked and select Internet Protocol Version 4 (TCP/IPv4), and then click OK.

   

The above method disables IPv6 on your LAN interfaces and connections, but does not disable IPv6 on TUNNEL interfaces or the IPv6 LOOPBACK interfaces.

To disable IPv6 on TUNNEL and LOOPBACK interfaces requires the following steps:

1. Click the Windows logo located at the bottom left of the screen.

2. Type regedit in the Start Search entry at the bottom of the menu.

   

3. Navigate to: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip6\parameters

   

4. Right click anywhere on the right hand side of the window and select New and then DWORD.

   

5. Name the DWORD DisabledComponents.

6. Double click DisabledComponents to modify the value.

7. Change the data value to 1 and ensure that Base is set to Hexadecimal.

   

8. Close regedit and re-start the computer.