Why won't my Xbox One X (2014/2015) connect with a 5 ghz network

Hi,

since upgrading to Xbox One X I used to connect to the internet with 5 GHz (frequency) home Wi-Fi (the router is right next to my console) and I haven't had any problem. However, since like 10 days ago, my console isn't all of a sudden able to connect to
the 5 GHz Wi-Fi. Xbox identifies the network but it returns "can't connect to the wireless network" error when trying to connect to it.

It connects to the 2.4 GHz network without any issue though.

My other devices connect to the 5 GHz network just fine.

I would like to know if I should send the console for repair or if there is any way to make it work again.

I have already tried to: change SSID and password, change security setting, check that MAC filtering is turned off, factory reset xbox, alternate MAC adress, disconnect and restart router.

Thanks in advance for any advice.

since will not on my upgrading to um Xbox one x did make a Right way do but how fix up my a life be used to connect to the with 6 GHz my home and no wi-fi all in the moring full time

So this is EXACTLY the issue I'm having. Just bought a Cisco/Linksys E4200 for the sole purpose of using the 2.4 Ghz Wifi network for most of my home network needs and using the 5 Ghz network exclusively for streaming Media Center to the Xbox. Bought a new
black Wifi N dongle for my Xbox 360 Elite, but no luck. I can connect to the 2.4 Ghz network, but get network congestion issues and such-- It sees the 5 Ghz network, but won't connect. I've returned the xbox dongle and replaced it with another to no avail.
Any ideas? Sounds like a well known problem here-- but didn't ever see a resolution! If its just an issue with the E4200, I may have to return it and get something else. Recommendations? How do I fix this?

Oh no it's not a solution. I only got to test with the other 5 GHz net.

I might have to send my Xbox in for repairs, if I can't upgrade wifi.

Unless someone else replies with a solution.

Thank you for replying and have a good one!

It works fine on 5 GHz.

My phone's hotspot just isn't a good router.

But I still don't understand how or why my Xbox wouldn't connect to my 2.4 GHz wifi.

Great! Hope it works on another network because if not, it could already be a hardware issue with the Xbox.