topic ⚠️ Zyxel router admin: Connection not secure. Security certificate is invalid. in Broadband

⚠️ Zyxel router admin: Connection not secure. Security certificate is invalid.

456 — Fri, 29 Mar 2024 16:03:11 GMT

When I try to log into the web GUI for the Zyxel router via 192.168.1.1, it's showing as "connection not secure" as the security certificate is invalid.

This should NOT be the case, as this is what can allow hackers to perform MITM attacks on one's network/devices.

I have now factory reset the router, but the issue has not been resolved. Can Zyxel/Three not pay for a security certificate or fix this? Can they at least send out an email explaining what to do and why the connection is not secure?

Typical. I have spent hours on the phone and via chat with Three, getting nowhere.

Re: ⚠️ Zyxel router admin: Connection not secure. Security certificate is invalid.

Psmithson — Fri, 29 Mar 2024 16:30:30 GMT

Glad someone made the attempt to find out what's going on with it. I think it got broke on a recent update - I seem to recall seeing a post on here about it.

Re: ⚠️ Zyxel router admin: Connection not secure. Security certificate is invalid.

davewuk — Fri, 05 Apr 2024 13:03:12 GMT

I have this issue also, been looking for a fix but haven't found anything that works yet.

Re: ⚠️ Zyxel router admin: Connection not secure. Security certificate is invalid.

ukcookey — Sat, 18 May 2024 11:30:12 GMT

I too have this issue & its driving me mad

Re: ⚠️ Zyxel router admin: Connection not secure. Security certificate is invalid.

rodlaw70 — Thu, 26 Sep 2024 23:35:43 GMT

I'm still seeing this on the b15 firmware. It's not very reassuring.

Re: ⚠️ Zyxel router admin: Connection not secure. Security certificate is invalid.

Waves-d — Thu, 15 May 2025 06:30:56 GMT

I had this try changing your dns settings to 8.8.8.8 8.8.44 the certificate should be given on connection to the client.
my error went when I switched to Google dns