network-related keys in the windows registry editor (regedit.exe) [closed]

Where in Windows in regedit.exe (registry editor) are the keys responsible for network connections, network, proxy, VPN, etc.? I accidentally changed something in one of the keys earlier, but I don’t remember what key it is and that’s why I can’t connect to VPN now (error 800)

I know that one of the keys where you can configure something related to the network is this key path: HKEY_CURRENT_USERSoftwareMicrosoftWindowsCurrentVersionInternet Settings

My question is: what are the other keys in regedit.exe (apart from the key mentioned above) that are related to networks in general, also including proxy and VPN settings etc? (I want to find the key where I changed something and fix it so that when I try to connect to VPN I don’t get error 800)