I have a Time Capsule in my house and a 25m ethernet cable to an Airport 
Express down in my sons room configured as an extender (Ethernet up the wall 
cavity, down the house then back down cavity in his room). Just recently I have 
been having issues with some devices in the house connecting to the WiFI 
network from the TC. This morning I tried on my iPhone 8 again and whilst it 
connected a small message underneath said “Weak security - WPA/WPA2 (TKIP) is 
not considered secure. If this is your WiFI network, configure the router to 
use WPA2 (AES) or WPA3 security type”. 

I checked in Airport Utility and I only have WPA2 (Personal or Enterprise, I’m 
set on Personal) as an available security setting - not sure what the (AES) bit 
means but do not have WPA3 either - so I can’t actually make a change to this 
setting. As a result of this I have set up the WiFi network for the NBN Modem 
for an alternate WiFi network in the house for when difficulties arise. No 
problems with that one. The problem seems to be with iOS devices not OSX 
devices - so the TM backups are ok as they need to be connected to the TC and 
not the NBN Modem. 

Anyone else have these issues and any tips on what I can do to resolve this one?

Regards

Pete.
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