SonicWall TZ400 — End-of-Life & EOSL Dates
SonicWall TZ400 next-generation firewall. Published last-order-day (end-of-sale) and end-of-support (EOSL) dates from SonicWall's public Product Life Cycle Tables, linked for verification.
SonicWall TZ400 is still under SonicWall support, to Aug 2026. Fold the eventual replacement into your planning cycle.
End of sale
Jul 2021 – Apr 2022
Last date of support
Aug 2026
Part numbers
2
0
months of vendor support left
Why this score
- End of service life within 6 months
- 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 2 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 |
|---|---|---|---|---|
| TZ400 | SonicWall TZ400 next-generation firewall | Apr 2022 | Aug 2026 | Ending soon |
| TZ400W | SonicWall TZ400W next-generation firewall | Jul 2021 | Aug 2026 | Ending soon |
Options from here
SonicWall support for the SonicWall TZ400 ends soon. Weigh these before the cutoff:
Support ends soon. Set the replacement window now, not mid-outage.
Bridge coverage past the OEM cutoff if you can't migrate in time.
Get the replacement into this planning cycle.
Secure spares before they get scarce after end-of-sale.
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.
SonicWall TZ400 — questions
Is the SonicWall TZ400 end of life?
Not yet. All tracked TZ400 SKU groups are still within SonicWall support, though dates vary by SKU. See the breakdown below.
What is the last date of support for the TZ400?
Aug 2026, per the SonicWall end-of-sale bulletin.
Where do these TZ400 dates come from?
Every end-of-sale and end-of-service-life date on this page links to the official SonicWall end-of-sale bulletin it was taken from.
On the same timetable
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