, but a simple
(Without quoteon my command prompt did the job I needed. It actually repairs the registry key HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\IPsec\Policy\Local as the above article describes.
Change back the service from disabled to automatic and it should start if you try it manually. Make a reboot and check again. This worked for me, hope it does for you and go back home earlier than you expected!
Have a good day 🙂