c7800 won't allow 5g sign on kicks you off

[Sean55]

e reset my router and tryed changing channel no mater what  I can not connect to 5g even sitting next to the router. Gives authentication error or just kicks you off. help please

[michaelkenward]

Connect to the router with what? Something that used to connect?

Does this affect all wifi clients.

[FURRYe38]

What security mode do you have set? WPA2 and AES only? 

What happens if you temporarily set security mode to disable. Do devices still get disconnected any? Re-enable WPA and TPIK and test.