blocked by key handshake fail - Iphone 16 - IOS

venom

Hello,

I've had three Wi-Fi access points for several years, but since upgrading to iPhone 16 (iOS), the Wi-Fi disconnects very regularly for no reason. I have the following logs:

I tried the following procedure without success, do you have any other solutions?

https://community.zyxel.com/en/discussion/17829/what-does-the-blocked-by-key-handshake-fail-log-mean-and-how-to-resolve-the-issue

Sincerely

Venom

Zyxel_Melen

Hi @venom,

To better address this issue, could you enable Zyxel support access so we can use your configuration to reproduce this issue?

https://community.zyxel.com/en/discussion/14234/nebula-how-to-turn-on-zyxel-support-access

venom

Hello,

It's done.

Sincerely,

Zyxel_Melen

Hi @venom

Thanks for the privilege. We are checking and replicating your issue. May I know the IOS version of your IPhone?

venom

Hi @Zyxel_Melen ,

IOS ⇒ 18.4.1

Sincerely,

Zyxel_Melen

Hi @venom,

After checking the device's diagnostic file, we found that the Wi-Fi connection was connected, but your iPhone disconnected itself.

We did a local lab with the same model and IOS version, we didn't get the same result. Also, we noticed your iPhone is well connecting now.

May I know if you did any adjustment?

venom

Hello @Zyxel_Melen

No, there's no change; the problem is completely random.

For example, at 9:30 PM now, the problem persists.

A few months ago, I tested connecting directly to my router's Wi-Fi for several days, and I had no problems.
I regularly have problems with Zyxel Wi-Fi hotspots.

Zyxel_Melen

Hi @venom,

Thanks for the information. Regarding the logs we checked, this issue is that iPhone autonomous disconnects the Wi-Fi connection. So, the problem will be why iPhone disconnect after connecting.

Please help to clarify:

1. Regards to your new update, your router supports Wi-Fi function. May I know if your network uses the same SSID for Wi-Fi roaming?
2. If so, are all devices using the same security and password for the same SSID?
3. Does this issue happen with other security options? Please help change to WPA2, Enhanced-open, Open for clarification.

Additionally, we found your SSID's setting doesn't enable "Assisted roaming" and "802.11r" for fast roaming. If you want to have Wi-Fi roaming, please enable these functions and ensure all AP and wireless route are using the same security option and password.