There's several no "internet" questions on here already, but most of them are a different scenario.
The machine in question here is a Windows 10 Pro, Dell XPS 12, factory specs. It literally can connect to a network, wirelessly with no issues. I can remote desktop into the machine and the machine can talk to other machines and devices on my network, make changes to the router settings, etc.
However, the machine cannot connect to the internet; I thought maybe it was the wireless adapter, blew it away, reinstalled it, tried 3 different driver sets for it, all the same result. I tried a different wi-fi network, same result, other machines, on both networks, can connect to the internet.
At this point, I tried a whole round of things, resetting the TCP/IP stack, resetting internet connection settings, resetting windows (not a full reinstall, just a reset), DHCP cache clearing, DNS flushing, re-registering all the proper windows DLL's, reinstalling windows services, disabling firewall and anti-virus; no luck.
I also tried USB tethering from my phone, which works fine on my other Windows 10 laptop, again, I get a connection to the phone that Windows 10 recognizes, can receive/send files over it, but cannot connect to the internet; same with bluetooth, and the onboard network card, hard-wired in.
So 4 different methods of connecting to the internet, and it can't connect using any of them, but it can connect to other devices and computers, long story short/TLDR, it has LAN access but no WAN access, no matter what I connect to.
Any other suggestions?