I have 2 XP machines and 1 Vista machine. The Vista machine can access the XP machines (using a variety of methods), but the XP machines cannot access the Vista machine (in any way/shape/form). That includes "ping", file sharing, an HTTP server, anything. I temporarily disabled the Window's Firewall and McAfee (which is running on the Vista machine), but no luck. All computers are in the same workgroup and subnet. I looked for denial logs for Window's Firewall and McAfee, and neither one had any record of the attempt that I could find. Does anyone have any ideas for how to fix this? Any tips that may help me narrow it down?