Hello Mr. Blasizeau, I am sorry no one has attempoted to answer your question yet.
Unfortunately we do not have a Chromecast here to test with, but taking a guess could you try enabling a second SSID to test with. Then set the security to something lower than what you are currently using say WPA and a simple password, 8 characters, numbers and lower case. If that does not work try with no security and see if that will work.
If we can get one of those to work then we should be able to set that SSID up with MAC filtering to just allow the chromecast to connect to make it secure.
Just a quick thought.
Please try and let me know the results
Eric Moyers .:|:.:|:.
Cisco Small Business US STAC Advanced Support Engineer
Yes, sorry I never came back to report. I tried changing my security parameters, I even tried to entirely remove them, but nothing seems to work. So I gave up and my Chromecast is taking dust ever since.
Hard to help with no WAP4410N firmware version information 8-/
Consider to roll-back WAP4410N to 188.8.131.52 firmware:
After minutes to a few hours of WAP4410N uptime on 184.108.40.206 (what is supposed to be a security fix only - proofed wrong!), we found many kind of network activities badly fail - ie Broadcast discovery of some vendor NAS and various vendor network cameras by dedicated apps, Bonjour hosts (Time Capsule, AFP servers, ...), and last but not least Chromcast capable Apps (i.e. on Android) and the Chrome browser plugin fail to discover the Chromecast device(s) associated to multiple WAP4410N (W)LAN.
I have the 220.127.116.11 firmware. 802.11n only. I tried WPA & WPA2, only letters in the ssid and password, but I still have a message telling me to check my password when I try to connect in the chromcast app.
Works for me - WAP4410N-E V1 and V2, 18.104.22.168 firmware, 802.11n only, WAP2-PSK only, ensure not using any non-simple characters in the ESSID and the PSK - stick to A...Z, a...z, 0..9, ... to start with.
Article ID:5727 Configure the Single Point Setup on the WAP581 Objective
A Wireless Access Point (WAP) connects to a router and serves as a node
to the Wireless Local Area Network (WLAN). Clustering is when multiple
WAPs are joined on the same network. Th...
Article ID:5706 Upgrade the Firmware on the WAP125 Objective New
firmware releases are improvements from previous firmware versions.
Network device performance can be enhanced when an upgrade is made.
Firmware files can be downloaded through: Trivial File...
Article ID:1972 Configure Time Settings on a Wireless Access Point
Objective The system clock provides a network-synchronized time-stamping
service for software events such as message logs. Without synchronized
time, accurate correlation of log files betw...