can't create homegroup

[Crypto123]

When I try to create a homegroup it tells me that a homegroup in the name of my sister's pc is available. the weird thing is that my sister is not in any group nor made one.

 

[Colif]

1) Delete all files in the hidden C:\Windows\ServiceProfiles\LocalService\AppData\Roaming\PeerNetworking folder on the PC you want to leave the homegroup.

2) Restart the PC.

https://www.eightforums.com/tutorials/15850-homegroup-leave-windows-8-a.html

see if that helps


more complete version

1. Go to c:\windows\serviceProfiles\LocalService\AppData\Roaming\PeerNetworking.
2. Delete idstore.sst and move on to Step 3. If deleting idstore.sst doesn’t work, go back to c:\windows\serviceProfiles\LocalService\AppData\Roaming\PeerNetworking and delete all files and folders in it and go back to Step 3.
3. Go to the Network Settings and Leave the Homegroup.
4. Repeat this for all the computers in your network.
5. Turn off your computers.
6. Turn on just one, and create a new Homegroup on it.
7. This Homegroup should be recognized on all of your computers now.

from: http://windowsreport.com/homegroup-windows-10/ (don't download anything from them)