To disable certain IPv6 components in Windows Vista, follow these steps:
- Click Start, type regedit in the Start Search box, and then click regedit.exe in the Programs list.
- In the User Account Control dialog box, click Continue.
- In Registry Editor, locate and then click the following registry subkey:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip6\Parameters\ - Double-click DisabledComponents to modify the DisabledComponents entry.
Note:- If the DisabledComponents entry is unavailable, you must create it. To do this, follow these steps:
- In the Edit menu, point to New, and then click DWORD (32-bit) Value.
- Type DisabledComponents, and then press ENTER.
- Double-click DisabledComponents.
Type any one of the following values to configure the IPv6 protocol, and then click OK:
- Type 0 to enable all IPv6 components. Note The value “0” is the default setting.
- Type 0xffffffff to disable all IPv6 components, except the IPv6 loopback interface. This value also configures Windows Vista to use Internet Protocol version 4 (IPv4) instead of IPv6 in prefix policies.
- Type 0x20 to use IPv4 instead of IPv6 in prefix policies.
- Type 0x10 to disable native IPv6 interfaces.
- Type 0x01 to disable all tunnel IPv6 interfaces.
- Type 0x11 to disable all IPv6 interfaces except for the IPv6 loopback interface.
Now You must restart your computer for these changes to take affect.