disabling ipv6 on windows 7 64bit

not sure what i am missing here..

every website suggests creating this reg key:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip6\Parameters\DisabledComponents

as DWORD and setting its value to 0xFFFFFFFF

i've done this, but when i reboot, my NIC adapter still shows IPV6 enabled.

since i have 64bit version, i also tried setting this value as QWORD. what am i missing here?

Just because it's turned off in registry doesn't mean your check box on NIC will dissapear. It just means it's disabled. Just to be sure I usually do it in both places (in registry and NIC properties). For Windows 7 however doing it on NIC properties should be enough, but for Exchange 2010 (as a side note) it brings Windows Server to knees.

Couple of ways to disable IPv6 completely (just for answer completeness):

• Run this from command prompt reg add hklm\system\currentcontrolset\services\tcpip6\parameters /v DisabledComponents /t REG_DWORD /d 255 and then reboot.
• Run this Microsoft Fixit utility http://support.microsoft.com/kb/929852

Some helpful links:

• http://windows7themes.net/disable-ipv6-windows-7.html
• http://www.techjunoon.com/how-to-properly-disable-ipv6-in-windows-7/