For Windows 7 and Windows Server 2008 R2, there is hotfix to set the machine to prefer IPv4 over IPv6

Refer to link below:

http://support.microsoft.com/kb/2533454

As my environment is not going to IPv6 so fast yet. Wonder if there is similar hotfix for Windows 8 / Windows Server 2012?

IPv6, and IPv4 can co-exist. What specific problem(s) you are facing, that you want to disable IPv6?

No, Microsoft hasnt release the similar hotfix yet. You can focus on Microsoft official website for the latest information.

Thank you for your understanding.

Windows 8.0, will not prefer IPv6 destinations, if IPv6 internet connectivity is not available. Status of IPv6 internet connectivity is determined by NCSI  service ( Network Connectivity Status Indicator Service).

• Proposed as answer by M. Israr KhanMicrosoft employee Thursday, April 11, 2013 6:08 PM
• Marked as answer by Leo HuangMicrosoft contingent staff, Moderator Thursday, April 18, 2013 9:52 AM

After my testing, I found NCSI did not work well.

Even NCSI detect IPv6 connection is not availible, Windows still use IPv6 to connect website first, not IPv4.

You can refer to my question in:

https://social.technet.microsoft.com/Forums/windows/en-US/9791c869-6797-4cf9-880f-05e11b955f7a/network-connectivity-status-indicator-for-ipv6-works-wrong-in-windows-7-and-windows-8?forum=w7itpronetworking

Thank you.