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.
Support summary
Past end of serviceEvery 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.
Why this score
- Past end of service life — 30 months ago
- Vendor-published date, source-linked
- Category: next-generation firewall
The score reflects support-lifecycle timing and source confidence only — it is not a risk, safety or compliance rating. How it’s calculated →
FortiGate-3815D-DC / FortiGate-3815D-DC-NEBS / FortiGate-3815D-NEBS
EOSL — PASTFortiGate-3815D
EOSL — PAST1 SKU in this group
FortiGate-3815D-USG
EOSL — PASTOptions from here
Unsupported nowThe 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 or maintenance and lists no paid placements. Third-party maintenance keeps unsupported gear in production past the OEM cutoff; whether it fits depends on the asset's role.
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.
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