I'm running Parallels 6 right now - this happened in Parallels 5 too, in my Windows XP virtual machine. Windows XP refuses to connect to any network until it's "warned" me about no firewall being active, which goes away on its own after about 3-5 minutes, and everything starts working again. If I try to view Windows Firewall settings via Control Panel, Windows tells me: "Due to an unidentified problem, Windows Firewall settings cannot be displayed." This happens every time Windows XP is started or restarted. Is this a Parallels issue, and if it is are there any known workarounds? I have 1 out of 2 cores devoted to the VM, and I've given it 1GB of RAM (out of 4GB on the physical hardware). I'm running Service Pack 3 with pretty much every update released post-SP3.