Fortigate 80c v4.0 reset admin password

I don't remember well when we were running 4.0MR3 15 years ago or so. But I think the "maintainer" operation was the same. So try following below:

https://community.fortinet.com/t5/FortiGate/Technical-Tip-Reset-a-lost-admin-password-on-a-FortiGate-unit/ta-p/194937

Toshi

Thanks, but I already tried maintainer and it doesn't work.

Are you sure you put the correct password (case sensitive) within 14 second? If so, I don't know any other way. You need to find an older guy than me.

yes, but unfortunately it just doesn't work. thanks.

If the maintainer account does not work properly, you can only format the CF card by the console, and then use tftp to import the image to restore the device.

If you can lose the config, or have a backup config.

Dear khee,

I'm not certain if the FortiGate 80C has a reset button, but a number of the smaller models do have one (a pinhole labelled reset); pressing the button by inserting a paperclip or similar, usually within 30-60s after reboot, triggers a factoryreset. That would lose you the configuration, but you should be able to log in with admin/no password.

Details on the reset button procedure here: https://community.fortinet.com/t5/FortiGate/Technical-Tip-How-To-Reset-To-Factory-Default-Configuration/ta-p/198660?externalId=FD33883