How do I (re-) enable Teredo and ipv6?

Dear Ajay,

Please see the answers here from Carol13.  I seem to have been working with two accounts, both mine.

Regards,

Carol S.

Back again,

I tried "Change the Password" because that seemed a ready trial after so many errors.  I had the incidental probem of my laptop not printing wirelessly; and I thought that had to do with Network, not Homegroup.  My pleasant surprise!  Everything began working.  Maybe you can clarify what actually happened from a tech point-of-view.  I would be curious myself.

Thanks for your response,

Carol S.

Hi ceemes,

What is the complete error message you receive?

 

Method 1: Run the HomeGroup troubleshooter and then check

 

Open the HomeGroup troubleshooterhttp://windows.microsoft.com/en-US/windows7/Open-the-HomeGroup-troubleshooter

 

Method 2: Update the driver for Microsoft Teredo Tunneling Adaptor:

 

Here are the steps:

 

a. Open Device Manager by clicking the Start button, clicking Control Panel, clicking System and Maintenance, and then clicking Device Manager.‌

b. If you are prompted for an administrator password or confirmation, type the password or provide confirmation.

c. Look for Teredo Tunneling Pseudo-Interface, right click on it and select ‘Update Driver Software’

d. Browse my computer for driver software, then select ‘Let me pick from a list of device drivers on my computer’.

e. Reboot the computer and check for the issue.

Method 3: Run the fixit to enable IPv6 ****

Run the Microsoft Fix it (50440) available in the article below

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

 

Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base

**How to back up and restore the registry in Windows**

 

 

Method 4: Download and install the latest network adapter drivers from the computer or device manufacturer’s website.

Dear Ajay,

Your Reply reiterates basically what I have written in my own reply to my own question - but in a much clearer, less anecdotal manner. Thank you.

The error messages I was receiving had to do with the loss of functionality in Homegroup. I use the tried and true trial-and-error method. Mostly I was told that the Administrator had disabled the Teredo Tunneling Adapter - which I had not, at least, knowingly.  That needed to be re-enabled in order that IPv6 could operate, a protocal required by Homegroup.  Your Method 1 mostly told me that I had network problems that needed to be resolved first.  It did not give any specificity about where to look.

As I circled around today, I nosed into Component Services and did discover in the Event log this code:  (Not helpful for me, but maybe you.)

Just checking in to say that my problems have resolved.  This is what I did:

• Viewed  http://support.microsoft.com/kb/929852  and hit the Enable IPv6 button (FIX IT).  I had to try twice with the laptop.  (Not sure if this was the golden step . . . .  because Homegroups was still not responding.)
• Returned to Device Manager (after some more reading) and hit Hidden Devices.  What a revelation - I cannot believe that I have missed that little item all these years.  Anyway, the Teredo Tunneling Adapter is listed under Network Adapters and was working fine.  There was no update for it.
• Went to a Command prompt and typed in ipconfig /all . The Teredo adapter was properly listed in both machines.
• Rebooted both computers a couple of times in here.
• Finally, since the computers were reporting a homegroup but not "seeing" the computers, I considered "leaving" the group (wherever it was) vs. "changing the password."  The latter seemed less dangerous (given other reading).
• And it worked.  The computers are listing each other and I am printing wirelessly again.

I hope that my next mysterious problem is a long way off.

Maybe this will help someone.

Carol S.