How to manually install IPSec VPN Client drivers?
Microsoft Windows driver installation module might not install 3rd party drivers properly (e.g. TheGreenBow IPSec VPN Client ndistgb.inf drivers), especially when Windows is loaded with multiple tasks. Sometimes, registry settings are not performed properly, sometimes, not at all. There is a simple manual procedure to get you up and running. The required drivers are still in the system, so no additional download should be necessary.