Can't leave homegroup - Windows 7

Hello,

Desktop and laptop belonged to a homegroup. Recently laptop would no longer write to printer. It could no longer connect to it.

I decided to leave the homegroup on both. I was able to leave homegroup on laptop, but not on desktop. When I attempt on desktop, I receive the error:
"Windows couldn't remove your computer from the homegroup".

Did a google search on the error message and found several hits. None seem to resolve my problem.

I have deleted file C:\Windows\ServiceProfiles\LocalService\AppData\Roaming\PeerNetworking

Stopped service "HomeGroupProvider", but can't start it

I believe that I have followed all the steps of items I found, but cant leave the homegroup.

I would like to leave the homegroup and setup new one.

Does anyone have suggestions that will resove my problem?

Thanks

Stu

Running with Windows 7 Professional

If deleting the "C:\Windows\ServiceProfiles\LocalService\AppData\Roaming\PeerNetworking\idstore.sst" didn't fix the problem there are other ways to fix the problem.

Deleting that file and restarting the services usually fixes this but sometimes it doesn't work. I've seen this problem so many time's I've lost count.
Homegroup Not Working

The third post down in the thread below mentions another way to fix the problem with a registry adjustment.
Can't start Peer Name Resolution Protocol

Hello,

Sorry it took so long to respond to your suggestion. I tried your suggestion, but to no avail. After a long chat session with DELL, little over 7 hours, my problem was solved. They tried many many things.

Thanks

Stu