How to disable the MS IPSEC Service in Window Vista?

Hi All

I get the following error when attempting to connect to my work VPN:

"There is a conflict with MS IPSEC Service. Please either turn on 'Always UDP Encap' option for Nat Traversal from a VPN server, or Disable the MS IPSEC Service."

How can I disable the MS IPSEC Service on Window Vista? Note that disabling the ipsec policy agent in the MMC does not achieve this requirement.

Thanks :-)

What is a VPN?

VPN is (Virtual Private Network) were first used by companies to enable their employees to securely access internal systems such as email remotely (e.g. from home or while on business trips). Today they are increasingly being used for personal use by individuals to protect their privacy while online in public places (e.g. when using the wi-fi connection in a cafe) or in a country where the internet is censored / blocked (e.g. China, Saudi Arabia…).