Headstumper on Xmas Eve

[Ch3m1c4L]

Being able to ping some sites and not others may well be because you are forcibly using ipv6.

Can you manually assign yourself ipv4 either locally or via dhcp on your router? Id look into the fact that ipv4 is disabled on your pc for some reason,

Steps to troubleshoot IPv4 not working:

Run Command Prompt as administrator and execute the following commands:
netsh int ipv4 reset reset.log
netsh int ipv6 reset reset.log (if IPv6 is enabled)
Check and disable third-party antivirus software and Firewall.
Update your network drivers.
Reset Winsock Catalog using Command Prompt.
Try disabling IPv6 to see if it resolves the issue.

 

[Mujja]

Wouldn't the IPv6 only be relevant on the local network. Once routed it's using the WAN address. Manually setting a static IP would be something to try, but OP says they are unable to change the NIC's properties.

@Ewanb75 run "ipconfig /all" and check the DNS server is your router.

Then run "nslookup bbc.co.uk" and check the address on line 2, this should be your router.

 

[Meddling-Monk]

All other connected devices are working normally.

Seems like a config issue on the PC.

@Ewanb75 if you have another PC, install the new NIC on there and check.

I experienced the same thing during my instance of this. Only my main rig was impacted, no other device, NAS, secondary system, or the upstairs WiFi was impacted and they worked flawlessly. And I went through everything that's been suggested here in this thread and none of it helped in getting my main rig back online. Intermittent connections to sites, dailymail, bbc, email not working, almost identically to OP.

Hence why I asked if they actually just did a reset/Factory Reset, or actually powered the devices down (it'll knock out connections for everyone else unfortunately) before starting everything back up.

I'm aware that there's no logical reason why it should resolve it, but it did in my case. Hence why I suggested it and asked if OP just Factory Reset (which again, I also did and it failed to resolve issue), or did a full shut down and waited for 3 minutes for things to clear from lingering power in the devices first.

 

[Ewanb75]

fully powered down, my daughters pc works fine, has ipv4, can login to router. very last reset for ipv4 said failed, access denied, but everything else said ok, no ipv6 reset log, i tabbed the ipv6 off and nothing worked.

C:\Windows\system32>nslookup bbc.co.uk
Server: UnKnown
Address: 2a0a:ef40:740:9101:debb:530d:****:****

 

[tangey]

1) any chance that there was a windows update happened inbetween working and not working and that has screwed something up ?
2) disable all antivirus and windows defender etc, in case something screwed a firewall setting.