Error 765 on pc when connecting to xbox live

i would greatly appreciate it if someone could help me: when i go to allow network sharing on my pc for xbox live an error pops up it says network sharing is disabled error 765. does anyone out there know what i can do to fix this?

 

Could you be a little more specific?
I don't use network settings on my old Xbox. So all I can suggest, is that you check the network sharing settings on your Xbox, and go over your firewall settings, and network settings. You may also need to go into your IP(?)/Router settings.
That's what I, personally, would do if it was not connecting.

Hope this helps and you work it out.
Stay safe online & IRL,
Regards,
Guardian Phoenix.