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TCP/IPv6 and Homegroups -- TCP/IPv6 is active, but homegroup says it is not.

I have three computers all with Windows 7 Home Premium recently installed, and working fine. I want to create a homegroup. When I try to join one of the computers to an existing homegroup, I get the message "Your network connection must have IPv6 enabled". I have tried stopping and restarting TCP/IPv6 but I cannot get homegroup to work. I have switched off all firewalls. How can I check that TCP/IPv6 is working, and how can I fix it if it is not.

The Homegroup on the other two computers worked without any problem. All are connected by ethernet cable to a Verizon FiOs router. The problem computer has no other connectivity issues -- internet and email are working correctly. I can also see the "bad" computer on the network map from either of the others.
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Hi SandyGrim,

Welcome to Microsoft Answers.

a)      Do you get any error message?  If yes what is the exact error message?

I would like to explain that IPv6 was depended on by the RNRP (Redundant Network Routing Protocol) service. To troubleshoot the issue, let's refer to the following steps.

Step 1:

Temporarily disable Firewall and third party antivirus program on the computer for a test.

Step 2:

Verify relevant services are turned on.

1.      Click "Start", type "services.msc" (without quotation marks) in Search Bar and press Enter.

2.      If you are prompted for an administrator password or confirmation, type your password, or click Continue.

3.      Right click the "Peer Networking Grouping" service and choose Properties.

4.      Please check if the service is started; if not, please click the Start button and see if it works.

5.      You may also choose Automatic next to Startup type.

6.      Click OK.

7.      Please repeat the above steps with another service: PNRP Machine Name Publication Service.

Step 3:

Modify IPv6 registry key to enable IPV6

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: 322756

1.      Click Start, type regedit in Search Bar, and then click regedit in the Programs list.

2.      If you are prompted for an administrator password or confirmation, type your password or click Continue. 

3.      Locate and then click the following registry subkey:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\TCPIP6\Parameters

4.      Check whether the "DisabledComponents" registry key exists. If so, let's move on the next steps.

5.      Double click the "DisabledComponents" registry key and modify the value to 0.

(If the key doesn't exist, please create the key above and assign the value 0)

6.      Exit Registry Editor, and then restart the computer.

 For more information, we can refer to the link below:

HomeGroup get an error of must have IPv6 enabled

http://social.technet.microsoft.com/Forums/en/w7itpronetworking/thread/e24b20ba-b1f1-48f0-880b-2288cdd837de

To disable IPv6 check the article mentioned below.

How to disable certain Internet Protocol version 6 (IPv6) components in Windows Vista, Windows 7 and Windows Server 2008

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

To troubleshoot IPv6, check the articles mentioned below.

Diagnosing Connections

http://msdn.microsoft.com/en-us/library/ms881706.aspx

Troubleshooting IPv6

http://msdn.microsoft.com/en-us/library/ms899599.aspx

Hope this information is helpful.

Thank you and Regards.           

Thahaseena M
Microsoft Answers Support Engineer.
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Microsoft Answers Feedback Forum and let us know what you think.

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Thahaseena M

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Thahaseena M

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Thanks for your detailed response. The 3 steps you suggested solved the problem.
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Hi SandyGrim,

Good to know that your issue is resolved and thank you for letting us know. Hope you have a good day.

For anymore queries you can always post on Microsoft Answers.

Hope this information is helpful.

Thank you and Regards.           

Thahaseena M
Microsoft Answers Support Engineer.
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Microsoft Answers Feedback Forum and let us know what you think.

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Thahaseena M

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Thahaseena M

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After three frustrating multi-hour sessions with Microsoft support, this fix finally got me working!  please someone tell your support group about this.
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Thahaseena, Dudet, here it is 16 Jan 2010, and even Tech Service Level 2 can't get this fixed for me.  What's up with that?  This is starting to look like a Vista boondogle, and I am thinking of going back to XP like others are suggesting.  I have found too many other threads on this, such that I get lost in trying to make sense of them all.  When will Microsoft get it together on this?
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I am having the exact same problem

except when i change the registry value it changes itself back within minutes. I have tried changing the permissions to allow me to only change it but it still changes back.
So it still says ipv6 is inactive.

What should i do?
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Thahaseena,

With the number of views for this particular problem it would seem appropriate for MS to post a hot fix or a "Fix It" for this problem.  I have worked with computers for over 30 years and I still get the willies when you start talking about modifying the registry!!!!!!!

hinesjw

 

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Though it's from January 29 and I hope SJolson has already gotten an answer, in response to the question for the possible benefit of others, it is not possible to enable IPv6 while running ZoneAlarm 9 Free.  The firewall instantly and automatically disables the adapters when it starts up and only the paid versions permit the user to block this change.  I switched to the Windows firewall (and a third-party interface for convenience of use) to solve the problem.
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Hi Thahaseena,

I had the same problem connecting to my network. After installing ZoneAlarm free, my new Win 7 installation slowed down and my system was using 15-17% CPU resources at idle so I uninstalled the ZoneAlarm and reactivated Windows firewall.

That is when the network problems started. Teredo tunneling error and a code 10.

I lost Home group connectivity to my wife's laptop because the IPv6 required the use of Teredo. I thought I had to reformat the hard drive because none of the other solutions I found on the net worked.

Big Thanks to you! Your 3 step solution solved the problem.

My network is fully functioning again.

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Hi,

I'm new to Windows 7, but have been using XP for years.  I have just installed Windows 7 Ultimate 64 bit on a desktop and laptop but when I try to network them I'm hitting a brick wall.  Both machines currently have a workgroup and are setup as I would have setup XP for networking, but no joy.  I therefore decided to try using Homegroup as this supposedly makes networking easier.  I don't particularly want to use Homegroup as I would prefer to specify which discs and folders are available between machines without using the concept of "public" folders.

My first problem is the one discussed in this forum.  Although all adapters on both machines DO have IPv6 enabled I get an error saying it isn't.

I would appreciate an explanation as to why something so simple is causing so many problems on my Windows 7 machines:

- Why is IPv6 being seen as not enabled, when it clearly is?

- Why should it be necesssary for me to start some services (manually) and, if I want these services to continue to start after a reboot, change their configuration to start automatically?

- Why do I need to change the registry settings (which always revert back to there previous settings - but I am using the free version of Zone Alarm, so maybe this explains this)?

I work in IT so I am fairly computer literate, but given that Windows 7 is suppose to be easier to use, I'm confused.

I've already wasted hours of my life trying to get these machines to talk to each other and would like to understand why I'm finding it so difficult to setup networking on Windows 7.

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