Having same "Eacfilt Driver must be bound to active interface" error on HP dv6000 notebook. I've loaded both 6.07 and upgraded to 7.01, but both versions still result in the error. Eacfilt driver is located in the Local Area Connection properties and is checked. I went as far as disabling all services and ran the bare minimum of Vista, then installed Nortel (both versions), but same problem happens.
I did notice one thing though, if you unplug the cable from the NIC port the VPN attempts to connect and doesn't get the error. If you try to reconnect the cable the error pops up again. I've ran both versions as admin and both regular and compatibility mode with no success. I've updated the Intel Pro/100 VE nic adaptor to the latest version and it still doesn't work.
NIC port connects to everything else just fine on the network, internet, domain, everything. No other problems except this VPN bound interface problem. I've compared all the settings with a Dell 505 laptop, Vista installed, which works with VPN and all the NIC settings are the same and identical. Problem makes absolutely no sense. Only thing I can think of is the NIC is somehow bad with VPN and we may have to replace the motherboard inside. Stinks considering the HP is a brand new laptop. I can't believe that only one problem would occur and none of the others I listed above. I've done every "fix" that is listed on the internet plus did as much of my own troubleshooting as can think of in Vista and Nortel.
I hope someone comes up with a viable solution cause I'm pretty much all out of ideas. Tomorrow I'm going to get in touch of Nortel and HP to see if they have anything, but by judging from searching their entire websites for this issue and finding nothing, their tech support may not have a clue either. Anyone have any other ideas?