[vpn-help] Shrew VPN connection establishes Phase 1 connection but not mapped drives - Win 7 Home Premium

[Craig Collings]

Hi,

I have approximately 15 VPN connections working successfully (thank you Shrew) until my last encounter. It is a laptop running Windows 7 Home Premium and a pre-configured firewall (McAfee corporate) which works successfully on all the other machines using Shrew. This was a freshly rebuilt machine which successfully connected and mapped the drives correctly. It was when Windows performed its automatic updates that the VPN connection stopped working.

I rolled back the windows settings to before the update and the VPN would then complete Phase 1 and establish a tunnel, but could not ping anything on the VPN connection and would not map any drives. Windows has since updated with automatic updates and the VPN still creates the tunnel successfully, but I cannot call up anything on the VPN.

The settings confirming the VPN connection are:

config loaded for site 'Ashbury Labelling'
configuring client settings ...
attached to key daemon ...
peer configured
iskamp proposal configured
esp proposal configured
client configured
local id configured
remote id configured
pre-shared key configured
bringing up tunnel ...
network device configured
tunnel enabled

The method of communication is Transport- NAT-T /IKE  ESP. 
I am happy with the settings I have up to phase 1 as they are the same and working on multiple machines.
For phase 2 they are the same as the rest of the machines I have. The Transform and HMAC Algorithm are both set to Auto. The PFS Exchange and Compress Algorithm are both disabled. These settings are working on all the other machines. I have tried setting the PFS setting to Auto but this did not help. I have also checked to make sure that both the router and the remote PC have different network numbering (i.e. not both on 192.168.1.....)

The laptop functions correctly and has internet access, it just cannot create the VPN connection I need. Is there a solution for this problem. Is this a quick software fix or do I need to re-install windows?

Many thanks,

Craig