I have 3 computers, all Win XP Home, all SP2, connected with a Linksys router. One of the computers, a Toshiba Satellite notebook, can copy files from the other two, but none of the other two can get to the files on the notebook. The notebook shows up in network neighborhood but when I click on it I get the message "Logon failure: the user has not been granted the requested logon type at this computer." I tried it with the notebook on the wireless card and on the network card. Same result. I disabled Windows firewall and Norton AV on both computers. No help. All computers have the guest account enabled. I borrowed a notebook from a friend and it works on the network. I checked the services between the two notebooks, and all the important services have the same settings (usually automatic.) I can ping the NB from the other 2 and get a reply when I use the IP address or the computer name. I used the troubleshooter in Help, but after running thru all the options, it gave up. I've searched the MS database and tried their home network troubleshooting suggestions. I googled the error message, and I got a good review of all the obvious things to try, but none of the suggestions worked. I have a friend who works for Cisco, and he tried everything he knew about, but no go. I guess it's some kind of security problem, but I don't know how to look at the security permissions with XP Home. Maybe there's a registry setting that can be changed, but I don't know how to find it. Can anyone out there help?