@Svantes I have erased the networks and reinstalled the proper one again. Still the same result - connected to Wi-Fi but not to internet.

OK.

@Alexandre. WPA2

I have a network with 3 Deco 5. I have one (the newest) laptop where I get the message that the Wi-Fi uses an outdated securitystandard and it does not connect. We have two more laptops and two...