Hi I have a Windows 7 Ultimate machine with latest patches running IE8. I have a web service that supports both Ipv4 and Ipv6 addresses running on the same VLAN with addresses: IPv4: 192.168.10.56 IPv6: 2801:0:40:a::10 My PC has the following IP addresses: IPv4: 192.168.10.200 IPv6: 2801:0:40:a::a From my PC, I can ping both IPv4 and IPv6 addresses However, I can only access the web service via the IPv4 address i.e. http://192.168.10.56 I cannot access the web service via http://2801:0:40:a::10 Can someone assist? Thanks.Regards Andre Thompson