Can't connect to 5GHz network anymore

[Tzztr Rrtr]

So as the title says, I cannot connect to the 5GHz network anymore. it worked one moment, and then, BAM! it just didn't. I did not change anything. None of my devices can connect to it and only the 2.5GHz network works now. 

 

The network is still up and running and I can see it, I just can't connect to it. 

 

I have deactivated the 5GHz network in the webGUI and then after some time activated it again, each time I made such changes it completely restarted the wireless module, but it still doesn't work.

I have no clue what is wrong since I literally did nothing and out of the blue it just doesn't work anymore... 

[myselfolli]

What do you mean by 'you can't connect'? Do you get some error message? An authentication error? Or does the network just not respond at all?

[Tzztr Rrtr]

It doesn't respond at all. It tries to connect, on the phone it just tries several times and then failed. On my Macbook it says 

although I am right next to the router...

 

The diagnostics don't do anything and simply say "try restarting the router".

[kirashi]

19 hours ago, Tzztr Rrtr said:

It doesn't respond at all. It tries to connect, on the phone it just tries several times and then failed. On my Macbook it says 

although I am right next to the router...

 

The diagnostics don't do anything and simply say "try restarting the router".

Factory reset your router or modem and try again. If it still doesn't work after a factory reset, try connecting your client devices to someone elses' 5GHz network to rule them out.

[Tzztr Rrtr]

Already tried connecting to another 5ghz network and it worked fine.

 

I am kinda scared that if I factory reset the router it might cause it to lose the connection to my ISP. Could that happen? or will it reconfigure itself automatically?

[Jarsky]

It shouldn't affect your ISP configuration especially if its supplied by your ISP, but many routers let you back up your configuration which you could do before resetting it? 

 

I've had a similar issue with 5Ghz as well, but I think its more my device as i've just waited some time, rebooted the device and then eventually I can see the network again without touching my router. Not sure what causes it (e.g my Android TV or Note 4 + TP-Link Archer C7 router)

[Tzztr Rrtr]

Factory resetting helped! 

Thanks guys