disabling ipv6 on windows 7 64bit


not sure what i am missing here..

every website suggests creating this reg key:


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?

asked on Super User Dec 4, 2010 by Sonic Soul

1 Answer


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:

answered on Super User Dec 4, 2010 by MadBoy • edited May 11, 2011 by MadBoy

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