What is the default username for the Fortinet FortiGate 40F?

The Fortinet FortiGate 40F default admin username is admin. There is no matching default password — you set that yourself the first time you configure the router.

Fortinet FortiGate 40F default password & login IP

The Fortinet FortiGate 40F has no default password — you set one the first time you configure it at its admin page.

For regaining access to a router you own or administer. If you didn't set it up, ask whoever did.

Username: admin
Password: — no default —

You create this password the first time you set up the router. If you never changed it, factory-reset and set a new one.

Fortinet's first row in the dataset — FortiGate 40F is Fortinet's compact entry-level desktop firewall/NGFW aimed at small offices and branch/home-office deployments. FortiOS documentation (applies across the FortiGate line, not a 40F-specific page, so login host/IP are left blank rather than guessed): "By default, your FortiGate has an administrator account set up with the username admin and no password... Adding a password to the admin administrator is mandatory. You will be prompted to configure it the first time you log in... after a factory reset, and after a new image installation."

Factory reset

CLI: execute factoryreset, or hold the recessed hardware reset button (roughly 20 seconds, model-dependent) — after a factory reset the admin account reverts to no password and FortiOS forces a new one to be set on next login.

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Source: Fortinet Document Library — FortiGate/FortiOS 7.6.6 Administration Guide (official)verified · medium confidence · updated 2026-09-07

FAQ

What is the default password for the Fortinet FortiGate 40F?: The Fortinet FortiGate 40F has no default password — you set one the first time you configure it at its admin page.
What is the default username for the Fortinet FortiGate 40F?: The Fortinet FortiGate 40F default admin username is admin. There is no matching default password — you set that yourself the first time you configure the router.
How do I factory-reset the Fortinet FortiGate 40F?: CLI: execute factoryreset, or hold the recessed hardware reset button (roughly 20 seconds, model-dependent) — after a factory reset the admin account reverts to no password and FortiOS forces a new one to be set on next login.

Verification history (1)

Every time we've checked this model's default credentials, oldest first — including when nothing changed. Absence of change over time is itself the evidence.

2026-09-07First verified· set-on-setup
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