Using WIndows 7 Pro SP1 i made a notepad file with the following text: { if (isInNet(myIpAddress(), "192.0.0.0", "255.255.0.0")) return "PROXY 120.16.2.30:8080; DIRECT"; else return "DIRECT"; } My own ip adress is at work lets say: 192.0.10.100 in a 255.255.0.0 subnet. When i am not at work the ipadress changes off course. I have been testing let IE start with the configuration script proxy.pac in file://c:/windows/system32 IE is not working at home nor at work. What am i doiing wrong, my ip is in the range so when ip is 192.0.10.100 proxy must be used and when another range noting must be used.. directly Internet. freddie

Hi, Have a try with the following settings. if (isInNet(myIpAddress(), "192.0.0.0", "255.255.0.0")) return "DIRECT"; else return "DIRECT"; Another suggestion is to replace other proxy servers for testing. Here is a related guide can be referred to. FindProxyForURL.COM - A Proxy Auto-Configuration Resource http://www.findproxyforurl.com/pac_functions_explained.html If you have further question about this issue, please let me know.Ivan-Liu TechNet Community Support

Ivan, Thx. But when i do: if (isInNet(myIpAddress(), "192.0.0.0", "255.255.0.0")) return "DIRECT"; else return "DIRECT"; whatever situation i am in at work or somewhere else IE is always goiiing to try Internet directly without proxy server... I would not prefer to use findproxy because i have done that and it takes about a minute before IE knows it cannot reach te proxyserver and goes directly. This is much to long. So i thought when i let IE know that if my ip is in a LAN then go thru proxy else go directly.. freddie

Have a try with "192.0.10.0","255.255.255.0"Ivan-Liu TechNet Community Support