Question Suddenly stopped getting Internet on 5GHz WiFi network

[Goi]

Hi,
My main desktop (Windows 11 with an Intel AX200 WiFi card) stopped getting Internet on my ASUS ROG GT-AX6000 5GHz network yesterday. Here are the facts/symptoms:

• I get Internet on 2.4GHz, and also on another upstream ASUS router (both 2.4/5G).
• Windows shows "Secured, no internet" when I connect to the 5G Wifi, and when I run ipconfig, my Wireless LAN adapter Wi-Fi IP is 169.254.169.61 rather than 10.10.50.x which is my router's subnet. I'm also unable to load my router's admin page when connected to its 5G connection.
• Other devices (laptops/mobile devices) can get Internet over the 5GHz connection.
• I've rebooted both my desktop and the GT-AX6000 router, but still no Internet.
• I've not changed any router settings nor updated the firmware recently.
• There's nothing strange in device manager. No exclamation marks/etc.
• There were a few Windows updates installed yesterday that coincides with the problem (KB5040442, KB5039895, KB5002620, KB5041080, KB5002621), not sure if this could be the culprit.
• I've updated the Intel WiFi drivers from 22.x (released 2023) to the latest 23.60.0/23.60.1 for BT/WiFi but still get the same problem

Any idea why this may be?

 

[VirtualLarry]

Best guess, if other 5Ghz devices can connect to same router/SSID, and do have internet connectivity over 5Ghz, and it won't connect on that device, even after a mutual device reboot, is that it was one of the Windows Updates.

Edit: That, or you bumped/dislodged the 5Ghz antenna on the client device.

 

[Goi]

Thanks @VirtualLarry that might be it. I tightened both antenna (they were connected but had a little bit of give) and now 5G works. Lol, I never thought to check that.