FortiADC-400D
Fortinet FortiADC 400D — Fortinet FortiADC-400D application delivery controller
Lifecycle position
Options 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.
FortiADC-400D — questions
Is the Fortinet FortiADC-400D still supported?
No. Fortinet's last date of support for FortiADC-400D was Oct 2024 (per the Fortinet end-of-sale bulletin) — it is past end of service life.
When did the FortiADC-400D reach end of sale?
FortiADC-400D reached end of sale Oct 2019, per the Fortinet end-of-sale bulletin.
What is the last date of support (EOSL) for the FortiADC-400D?
Oct 2024 — per the Fortinet end-of-sale bulletin.
Can the FortiADC-400D be maintained after Fortinet support ends?
After the last date of support, FortiADC-400D units can often be kept in production through third-party maintenance providers. Fortinet no longer issues software fixes, support, or hardware replacement for it.