How to correctly disable IPv6 on Windows Server 2008

No, clicking on the checkbox won’t cut it… 🙂 But I see that often…

I see lots of posts and links but none that seem to spell it out clearly. It’s simple though and involves:

1. A Registry Change
2. A Reboot

Reference: Reference KB: http://support.microsoft.com/kb/929852

Note: Don’t just disable IPv6. Do it when necessary only.

Here it is…

1. Click StartCollapse this imageExpand this i, type regedit in the Start Search box, and then click regedit.exe in the Programs list.
2. In the User Account Control dialog box, click Continue.
3. In Registry Editor, locate and then click the following registry subkey:

   HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServicesTcpip6Parameters

4. 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:
   1. In the Edit menu, point to New, and then click DWORD (32-bit) Value.
   2. Type DisabledComponents, and then press ENTER.
   3. Double-click DisabledComponents.
5. 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.

Note You must restart your computer for these changes to take affect.

Notes:

IPv6 Still appears as checked (who cares)

But it does make it go away…