Just sharing what I found in case anyone else has this same issue (Related to http://forum.bitdefender.com/index.php?showtopic=35896):
After having difficulty adding a laptop to the homegroup I upgraded from BDIS 2012 to 2013. I attempted to leave and recreate the homegroup and found that I was unable to create another homegroup with the error, "Windows cannot set up homegroup on this computer" and no detailed information.
I tried deleting the folder C:\Windows\ServiceProfiles\LocalService\AppData\Roaming\PeerNetworking but it did not resolve the issue. I believed it was a firewall issue due to some troubleshooting I had tried previously with 2012 but after disabling the BDIS 2013 firewall AND antiprivacy I still could not create the homegroup on the main PC (or any other).
My fix:
- I ran BitDefender_Uninstall_Tool.exe on all networked PCs / laptops and restarted each.
- I ran bitdefender_isecurity.exe on all networked PCs / laptops and ran the "Remove" option and restarted each workstation again.
- I setup the Homegroup successfully on the main PC and then joined each of the other PCs / laptops along with the PS3 to the homegroup.
- I then reinstalled BDIS 2013 on all workstations and the homegroup continued to work perfectly.
I've repeated this procedure a couple times now to verify it and it has worked reliably each time.
HTH,
zp.