How to reset a lost password: Fortigate

Instead of "admin" account, the usage of "maintainer" accout is going to fix our issue, but note that do not skip to type a key prefix "bcpb" in front of serial number of the device...

e.g: bcpbFGT60xxxxxx

> connect to the Firewall via console cable (Rs232)

> type "mode" on cmd to detect proper connection point (COM3)

> use one of terminal emulater (PuTTy) to get connection with Firewall on Serial/COM3

> power off and power on the Firewall to get serail number and copy it on notepad (FGT60xxxxxx)

> again power off and power on the device, wait till the end of reboot process

> when the login prompt appears, you have to type the following credentials within 15 seconds: username: maintainer

password: bcpbFGT60xxxxxx use right click for the quick copy

now you're in! execute the following command on CLI to set a new password

config system admin

edit admin

set password xxx

end