Windows – How to create/delete a HomeGroup in Windows 8

homegroupnetworkingwindowswindows 8

I never used homegroups. Now, when I enter HomeGroup control panel page, I see that somebody has created homegroup on the network. User name and computer name displayed. I don't know who is this. I don't know such a computer. I am at home and I know all computers here. No one has this name.

How to create my own homegroup?

How to delete this parasitic homegroup? Windows manual says that everybody should leave a group then it will disappear. In my case there is no one in the group (mystic person only). How to delete a group?

UPDATE

Also I can't join this group. System asks a password from me. But I don't know it. And I can't ask it from that person because he does not exist.

UPDATE 2

I have no Create a homegroup button. It is replaced with Join Now button, since group is treated as existing.

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UPDATE 3

This is probably notebook I was taking from my friend long time ago. Notebook is already gone and no access to it. Most probably it was connected to my home WiFi.

Probably I clickded "create home group" on that notebook. So what? It infected my network forever?

SOLVED

My fault. This was a computer from VPN I participating. Anyway it is strange that computer can participate multiple LANs while homegroup can be only one.

Best Answer

Homegroups are kept up only while at least one machine is still active in the group. Some Windows 7/8 machine in your network is still a member of that homegroup.

The only way to remove a homegroup is to log on the PC that is a member and remove them from that group. The password for the homegroup will be stored on a member PC should you want to access it.

If you are running a router with an open WiFi it's possible that a neighbor could be on your network and you are detecting them. You can check who is on your WiFi by checking the DHCP lease table on your router.

Creating a homegroup is extremely easy. Follow this tutorial. As per Microsoft:

To create a homegroup

1. Open HomeGroup by clicking the Start button , clicking Control Panel, typing 
homegroup in the search box, and then clicking HomeGroup.

2. On the Share with other home computers running Windows 7 page, click Create 
a homegroup, and then follow the instructions.
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