Fortinet FortiGate 3815D — End-of-Life & EOSL Dates
Fortinet FortiGate 3815D next-generation firewall. Published end-of-order (end-of-sale) and end-of-support (EOSL) dates from Fortinet's public hardware Product Life Cycle feed, linked for verification.
Every tracked Fortinet FortiGate 3815D SKU group is past Fortinet end of service life (last group Jan 2026). Units in production should be treated as unsupported. For past-EOSL units, weigh third-party maintenance, spares, replacement, or a documented run-to-failure.
End of sale
Jan 2019 – Jan 2021
Last date of support
Jan 2024 – Jan 2026
Part numbers
5
31
months past last support
Why this score
- Past end of service life — 31 months ago
- Vendor-published date, source-linked
- Category: next-generation firewall
Support-lifecycle timing and source confidence only. Higher means more runway. It is not a risk, safety or compliance rating. How it is calculated
Part numbers in this family
Dates vary across 3 groups in this family, so every row carries its own. Find your exact part before you plan.
| Part number | Description | End of sale | Last support | Status |
|---|---|---|---|---|
| FortiGate-3815D-DC | Fortinet FortiGate-3815D-DC next-generation firewall | Jan 2019 | Jan 2024 | Past support |
| FortiGate-3815D-DC-NEBS | Fortinet FortiGate-3815D-DC-NEBS next-generation firewall | Jan 2019 | Jan 2024 | Past support |
| FortiGate-3815D-NEBS | Fortinet FortiGate-3815D-NEBS next-generation firewall | Jan 2019 | Jan 2024 | Past support |
| FortiGate-3815D | Fortinet FortiGate-3815D next-generation firewall | Jan 2020 | Jan 2025 | Past support |
| FortiGate-3815D-USG | Fortinet FortiGate-3815D-USG next-generation firewall | Jan 2021 | Jan 2026 | Past support |
Options from here
The Fortinet FortiGate 3815D is past Fortinet end of service life. These are the paths teams take from here:
Keep it in production past the OEM cutoff with an independent maintainer.
Buy spares now, while units still circulate on the secondary market.
It is unsupported today. Set a migration timeline and budget.
Low-criticality role: document the risk, harden backups, retire on your terms.
Independent and informational. EOSL.ai sells no hardware and no maintenance, and lists no paid placements. Third-party maintenance keeps unsupported gear in production past the OEM cutoff; whether it fits depends on the role the asset plays.
Fortinet FortiGate 3815D — questions
Is the Fortinet FortiGate 3815D end of life?
Yes. Every tracked FortiGate 3815D SKU group is past its last date of support.
What is the last date of support for the FortiGate 3815D?
Last dates of support across FortiGate 3815D SKU groups range from Jan 2024 to Jan 2026.
Where do these FortiGate 3815D dates come from?
Every end-of-sale and end-of-service-life date on this page links to the official Fortinet end-of-sale bulletin it was taken from.
On the same timetable
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