I've been struggling with my Windows 11 PC that's showing 'Connected' via Ethernet (Realtek Gaming 2.5GbE), but I can't load anything in my browsers. I keep getting errors like DNS_PROBE_POSSIBLE and timeouts. All my other devices on the same MoCA/Switch setup work just fine. I've even tried connecting directly to the router and swapped out my GPU for a Wi-Fi card, but the problem persists.
Here's what I've found:
- Pinging 8.8.8.8 works flawlessly with 13ms replies.
- nslookup for google.com works when I force DNS to 8.8.8.8.
- However, browsers won't load pages at all, and even trying to enter a direct IP like 142.250.190.46 fails to connect.
I thought installing a Wi-Fi card would help, but it ran into the same issues.
My setup is:
- Windows 11 (build 26200)
- AT&T Fiber (attlocal.net)
- MoCA Adapter -> Switch -> PC
- R5 7600x + RX 6800 + 32GB DDR5
I've tried just about everything: restarting all devices, resetting the network configuration, changing DNS settings, adjusting the MTU size, testing different Ethernet cables, and even going as far as a Windows In-Place Repair. Nothing seems to solve the problem. It's starting to feel like there's a deep OS-level issue blocking HTTP/HTTPS traffic or a lingering firewall rule from an old app. Any suggestions before I consider doing a full wipe?
4 Answers
Have you checked what DNS your router or modem is handing out? Run `ipconfig /all` in the command prompt. I know you set it manually to Google DNS, but sometimes ISPs enforce their own DNS settings, which can cause these kinds of problems.
It sounds like this might not be solely an HTTP/HTTPS issue, since a DNS error typically doesn't operate over those protocols. Have you tried using the Windows network troubleshooter? It might catch something that your manual resets didn't address.
Yep, ran it, and it says it can't identify the problem.
Temporarily disable all your antivirus and anti-malware software and see if that makes any difference. Sometimes those can interfere with your connection.
I actually disabled everything on startup, so only Windows services are running, and it still didn’t change a thing.
I feel like you're overcomplicating things a bit. Can you break down what happened right before this issue started? And have you tried just restarting everything again?
I've done that at least fifty times! No exaggeration here, I’ve been trying to fix this for 6 hours.

Actually, my router is set to 8.8.8.8, 8.8.4.4, plus a couple of IPv6 entries.