Can't Create Homegroup, Only Join.

[decemb3r]

Hey everybody. I have 1 computer. It's a bran new computer with a bran new install of Windows 7 64bit (so all settings are default). I created a homegroup on a home network and Windows had me write down a password. I accidentally left the home group. Whenever I try to create it again, I don't get the create homegroup option, but rather a "Join Homegroup" option. I thought I got rid of it when I left. I typed in my written down password with no luck.

Real quick, how do I get the "create a homegroup" option back instead of the "join homegroup" option?

 

[chev65]

The fix for this problem seems to be Deleting the file idstore.sst under C:\windows\serviceProfiles\LocalService\AppData\Roaming\PeerNetworking

There is also a registry adjustment for this problem which should be corrected with the following procedure. This is from Technet.

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

2. Verify relevant services
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a. Click "Start", type "services.msc" (without quotation marks) in Search Bar and press Enter.

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

b. Right click the "Peer Networking Grouping" service and choose Properties.
c. Please check if the service is started; if not, please click the Start button and see if it works.
d. You may also choose Automatic next to Startup type.
e. Click OK.
f. Please repeat the above steps with another service: PNRP Machine Name Publication Service.

3. Modify IPv6 registry key to enable IPV6
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a. Click Start, type regedit in Search Bar, and then click regedit in the Programs list.

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

b. Locate and then click the following registry subkey:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\TCPIP6\Parameters

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

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

http://social.answers.microsoft.com...k/thread/4865cd00-4ed9-4407-83eb-4babd99bf1e3