At a friends house, one computer is wired, the other is wireless. The wireless desktop can create and join..the wired one, cannot create or leave. I tried to create a homegroup on the wired desktop because it is the main one and get the error that a homegroup cannot be created because of too many mapping points...then the only button or selection available is to leave a homegroup and I get the error that the computer cannot leave a home group. Neither computer can see the other even though both are on the same router..one is running Norton security and the other isn't..could that be the problem?
Trouble creating/joining homegroup.... 
