Authentication Failure Radius Server showing Can't contact radius server

amitrohilla07 · ‎06-22-2025

Hello Team,

We have HA device both devices are login via Radius server, however we are facing issue with secondary firewall not able to login it shows Authentication Failure but on primary firewall we can be able to login the firewall without any issue. as of now workaround we are using that reboot the secondary firewall and after that it works fine but after couple of days issue raise again showing Authentication Failure. we tried to use set source-ip but nothing worked only solution we can afford as of now REBOOT.

Can you please look into this serious issue

Thanks

amitrohilla07 · ‎07-18-2025

Fortinet has officially confirmed this is a known bug affecting all FortiGate devices. The issue is recorded with engineering and is expected to be resolved in version 7.4.9, scheduled for release in September 2025.

Current Workaround

Login to the secondary FortiGate using admin credentials
Identify the PID of the fnbamd process by running
diagnose sys process pidof fnbamd
Kill the process using:
diagnose sys kill 11 <PID>
Replace <PID> with the actual process ID (e.g., 2456)Please note the PID will be changing evry time to please check PID very firstly before running kill command..
Example:-

View solution in original post

amitrohilla07 · ‎11-13-2025

Bug ID: 1163152

Authentication Failure Radius Server showing Can't contact radius server

Nominate a Forum Post for Knowledge Article Creation

Current Workaround

You are leaving our website