The NUC doubles as a JRiver MC music server, therefore I need it to connect on 2.4GHz to use these Chromecasts reliably. I have two Google Chromecast Audio devices (1st generation) which exhibit a much more stable network presence on the 2.4GHz band compared to the 5GHz band. Why does this AC 9560 fail to connect to 2.4GHz band? Is it a driver bug? Anything else to Interesting, thanks. This behavior is 100% repeatable, many many times. Exactly the same if I push the connection button on the router itself instead of entering the security key manually. Message “Verifying and connecting… … …”, followed by “Can’t connect to this network”. When I try connecting AC 9560 to 2.4GHz band, Windows says “Enter the network security key”. It is set to “Enable SSID Broadcast” with Security Option WPA2-PSK for both bands and same WPA2-PSK Passphrase for both bands. The router works normally with all other devices.

Router is Netgear R6220 with latest firmware version V1.1.0.110_1.0.1.

WiFi signal strengths measured next to the NUC are strong, with 2.4GHz band signal about 10dB higher than 5GHz band signal.Īn external Netgear A7000 WiFi USB3.0 Adapter attached to the NUC connects normally to both 2.4GHz and 5GHz bands.Īll other devices on the network connect normally to the 2.4GHz band (Win10 laptops, Win 10 workstation, Chromecast Audio devices, phones, etc.) using the same network security key. Same issue was found with 22.10.0.7 and 22.40.0.7 drivers.ĭevice manager Properties shows “This device is working properly.” No errors found in the Windows Event Viewer. The AC 9560 is in an Intel NUC8i5BEH running Windows 10 Pro 64-bit Version 21H1 with latest updates.ĪC 9560 driver 22.70.0.6 is latest available, freshly installed/re-installed multiple times with all older driver files presumably deleted, reboots, etc.

Jriver chromecast