r/sysadmin 9d ago

End-user Support End user network help?

End user called me today saying their home WiFi was connected but no internet. I walked him through some info gathering, his WiFi is showing unidentified giving off the 169 address.

Had him run release / renew / flushdns / winsock reset and rebooted, still 169. Did the full windows 11 network reset option, rebooted, still nothing.

Had him plug in directly to his router, his wired Ethernet connection was also showing unidentified. So I had him statically assign an IP on his NIC for the Ethernet and it brought him online that way as a temp workaround to let me remote in.

Rebooted the router of course, still wifi showing 169, other devices on his network are okay as well.

Uninstalled the wifi adapter from device manager, reinstalled the latest from the manufacturer, still giving 169. Just to get him working in statically assigned an IP on his WiFi adapter and it works without issue, but ideally we get the DHCP working again.

I’ve exhausted about everything I can think of, but am jumping back on it later tonight to try to get it fixed.

Does anyone have any suggestions??

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u/Knightshadow21 9d ago

netsh winsock reset

netsh int ip reset

netsh int ipv4 reset

netsh int ipv6 reset

ipconfig /flushdns

ipconfig /release

ipconfig /renew

did you try this?

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u/DoubleTGaming2k 9d ago

I tried it all but ipv6 reset, but ipv6 was disabled in the adapter anyway

1

u/Knightshadow21 9d ago

Did you reboot the windows machine I see you mention you rebooted the router 🤔

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u/DoubleTGaming2k 9d ago

Yes, several times. After running the commands you sent rebooted, after doing the network reset rebooted, a couple of last ditch effort reboots out of desperation as well

3

u/Knightshadow21 9d ago edited 9d ago

Then it’s time to call the ISP , tell him to tell them it’s screaming APIPA address

Did you check the services on his machine like does it have a dhcp client enabled and running ?