I have recently been issued with a new laptop that uses a Windows VPN mechanism, and this laptop is unable to connect to the VPN, giving me the error "The network connection between your computer and the VPN server could not be established because the remote server is not responding. This could be because one of the network devices (e.g. firewalls, NAT, routers etc) between your computer and the remote network is not configured to allow VPN connections. Please contact your administrator or service provider to determine which device may be causing the problem."
My employer says this can be caused by my ISP blocking VPNs (I've read elsewhere on this forum that TalkTalk doesn't block VPNs) or by packets being fragmented after encryption (I suspect this is likely to be the cause) but in either case it's not something they can resolve, it can only be resolved by me and/or my ISP.
