Resolving Internet connectivity issues on World IPv6 Day (June 8, 2011)

This article describes step-by-step instructions for mitigating issues you may have connecting to the Internet, or certain websites, on World IPv6 Day (June 8, 2011).  

Specifically this article repairs configurations where you have IPv6 connectivity to the Internet, but it is not working properly. This is usually caused by a computer or a router configuring Windows with IPv6 connectivity that is unreliable. This can slow down access to the Internet or participating websites on IPv6 Day.  

For more information about World IPv6 Day (June 8, 2011), please see About World IPv6 Day (http://isoc.org/wp/worldipv6day)

For more information about this issue and to see if you are affected, please see this blog post (http://blogs.technet.com/b/ipv6/archive/2011/02/11/ipv6-day.aspx) . 

To see a list of websites participating in World IPv6 Day, please see the Internet Society's participant's list (http://isoc.org/wp/worldipv6day/participants) .  

To use this fix, you must be logged on to the computer as a member of the Administrators group, or your user account must be granted permissions to edit the Windows registry.

The following Fix it solution will resolve the issue by configuring your computer to prefer IPv4, instead of IPv6. By default, Windows prefers IPv6 over IPv4. This Fix it solution is temporary, to resolve issues on World IPv6 Day for affected Internet users. On June 10, 2011 at 12:00AM, your computer will be configured to prefer IPv6 again after your next reboot.

To have us fix this problem for you, go to the "Fix it for me" section.

Fix it for me

To fix this problem automatically, click the Fix it button or link. In the File Download dialog box, click Run and then follow the steps in the Fix it Wizard.


Notes

• This wizard may be in English only. However, the automatic fix also works for other language versions of Windows.
• If you are not on the computer that has the problem, save the Fix it solution to a flash drive or a CD and then run it on the computer that has the problem.

Then, go to the "Did this fix the problem?" section.



Note If you have already run this Fix it solution, or if the current date is June 10, 2011 or later, the Fix it solution will not install on your computer.

Did this fix the problem?

• Check whether the problem is fixed. If the problem is fixed, you are finished with this section. If the problem is not fixed, you can contact support (http://support.microsoft.com/contactus) .
• We would appreciate your feedback. To provide feedback or to report any issues with this solution, please leave a comment on the "Fix it for me (http://blogs.technet.com/fixit4me/) " blog or send us an email (mailto:fixit4me@microsoft.com?Subject=KB) message.