Four SonicWall NSM On-Prem Versions End Support on October 30, 2026

By Scott Bissett  ·  Published: October 11, 2026  ·  EOL Watch — deadline analysis  ·  Read at SonicWall's Product Life Cycle Tables page and SonicWall's Network Security Manager product page on October 11, 2026; lifecycle dates from the table as we serve them.

SonicWall retires four releases of its on-premises firewall manager on the same day this month. The Network Security Manager (NSM) On-Prem software table on SonicWall's own Product Life Cycle Tables page prints Support Discontinued October 30, 2026 against 3.2.0, 3.2.1, 3.5.0 and 4.0.0. For 4.0.0, released April 28, 2026, the table prints a Limited Support date of October 28, 2026, two days before its Support Discontinued date. The other two served rows are in Limited Support already: 3.5.0 since August 23, 2026 and 3.2.1 since June 15, 2026. After that date the NSM On-Prem releases SonicWall still lists in support are 4.1.0 and 4.2.0.

Every NSM On-Prem version SonicWall lists

NSM is the on-premises management server for SonicWall firewalls, the successor to GMS, delivered as a virtual appliance. SonicWall ships it as feature releases (FR) and maintenance releases (MR) and gives each its own row and its own clock: on this table every served Limited Support date is six months after release, and Support Discontinued follows six to twelve months later, except for the four October rows, which SonicWall has pulled onto one day. Here are all eighteen rows from the table, with the three dates as we serve them on the SonicWall NSM page:

Three notes on the table. First, the Status column is the site's generic badge (Supported, Approaching, EOL), computed from the Support Discontinued date at every build; the last column is SonicWall's own phase name on the day this was written, using the page's terms (it calls the first phase Full Support when it tells Limited Support customers to "plan an upgrade to a release/version on Full Support"). Second, the two surviving releases are not in release order: 4.1.0 runs to November 26, 2027, five months longer than the newer 4.2.0, which ends on June 23, 2027. The table prints the dates; it does not say why. Third, the 3.2.0 Limited Support cell is blank here on purpose, explained next.

The cell we do not serve. For 3.2.0 SonicWall prints a Limited Support date that falls six months before the row's own Software Release Date of December 18, 2025. Every other NSM row's Limited Support date is its release date plus six months, so the intended value is evident, but a support window cannot open before the software exists, and we do not correct a vendor's table to what it evidently meant. Our 3.2.0 row carries no Limited Support date and the Support Discontinued date as printed, October 30, 2026, the same day as 3.2.1, 3.5.0 and 4.0.0. If SonicWall fixes the cell, the build picks it up and the row fills in.

Release Date, Limited Support, End of Support: the three phases as SonicWall defines them

SonicWall runs two lifecycle models on the same page: five post-release phases for hardware (Last Order Day through End of Support) and three for software. NSM On-Prem is software, so its rows carry the three software columns. Quoting the page, read on October 11, 2026:

Release Date.

"Release Date – generally available release/version. Enhancement requests for this release are accepted and may be considered for future releases. Maintenance releases and/or hot fixes are periodically made available for this release. Release/version is fully supported by both Support and Development. Release/version is available for download from Support Portal."

Limited Support.

"Limited Support – Support is available for this release/version, and we will use best efforts to provide known workarounds or fixes. No new code fixes will be generated except under extreme circumstances and at SonicWall's discretion. Enhancement requests are not accepted. Customers are encouraged to plan an upgrade to a release/version on Full Support."

End of Support.

"End of Support versions which are retired or discontinued. No new patches or fixes will be created for this release. Not available for download from Support Portal. Support will be provided to assist with upgrading to a supported version. Support is not obligated to provide assistance on this version of the product."

The page adds a reservation that applies to every row: "SonicWall reserves the right to modify the above support timelines for product security reasons or in the event the relevant product is obsolete or no longer commercially viable. In the event SonicWall shortens the support timelines stated above, SonicWall will offer relevant customers an alternate product that performs substantially similar functionality." For an NSM operator the practical reading is this: in Limited Support a case can be opened and a known workaround offered, and a new fix is possible but discretionary; after Support Discontinued the policy promises no patches, no download and help only with the upgrade. Whether a given release in Limited Support actually received a fix is not something the page says, and we do not say it either.

Where an NSM On-Prem server goes

To one of the two releases the table keeps in support after this month. Their dates on the lifecycle page as we serve them:

Both are feature releases from this spring and summer, and both enter Limited Support before the year is out: 4.1.0 on November 26, 2026, 4.2.0 on December 23, 2026. On SonicWall's definitions that is the point where new fixes become discretionary, so a server moved to either release in October is in Full Support for weeks, not years, and the Support Discontinued date is the one to plan around: November 26, 2027 for 4.1.0, June 23, 2027 for 4.2.0. A table that has added a feature release every one to four months since 2025 will most likely add another before then; when it does, it appears on the SonicWall NSM page at the next build.

The lifecycle page names no replacement product for NSM On-Prem, and none is implied: the on-premises product continues in 4.1.0 and 4.2.0. The other place SonicWall describes where NSM customers can run it is the Network Security Manager product page, read the same day, which offers two deployment models and answers the question in its own FAQ: "NSM On-Prem is a standalone console deployed within your own infrastructure, giving you full control within closed or highly secure network environments. It supports KVM, ESXi, Hyper-V, and Azure deployments. NSM Cloud is delivered as SaaS through SonicWall Unified Management, offering connected insight across the SonicWall ecosystem with access to SAMI, SonicWall's AI assistant. The right choice depends on your governance requirements and whether a cloud-delivered model fits your environment. The benefits of an on premises firewall management include data sovereignty and air-gap capability whereas the benefits for SaaS model include no infrastructure overhead, faster deployment and remote accessibility." NSM Cloud has no row on the lifecycle table; the dates in this article apply to the On-Prem releases only. Whichever model a customer picks, SonicWall's own instruction for a release in Limited Support is the one quoted above: plan an upgrade to a release on Full Support.

Why a management server's date matters

NSM is not a firewall. It is the console that holds the policies, pushes the firmware and collects the logs for every SonicWall firewall it manages, which makes it one of the more privileged systems on a network and one of the quieter ones: it sits behind the firewalls it manages and rarely appears in an external scan. SonicOS, the firewall operating system NSM administers, has entries in CISA's Known Exploited Vulnerabilities catalog, and the appliances that run it are on our EOS Edge Device List. NSM itself has no entry in the catalog, and this guide makes no claim about NSM flaws. The point is narrower: a vendor whose firewall line draws exploitation attention has told its customers, on its own page, that four releases of the firewall console stop getting patches on one date, and that two releases continue. Being on one of the two is the whole task.

What to do

On 4.0.0: you are in Full Support until October 28, 2026 and Support Discontinued two days later. Move to 4.1.0 or 4.2.0 before October 30, 2026; after that date SonicWall's policy says the 4.0.0 download leaves the Support Portal, so take a copy of the installer and your backups before the move, not after.

On 3.5.0 or 3.2.1: you have been in Limited Support since August 23, 2026 and June 15, 2026 respectively, where a new fix is at SonicWall's discretion. The same move, with the same deadline of October 30, 2026.

On 3.2.0: the Support Discontinued date is October 30, 2026 as printed; the Limited Support date SonicWall prints for this row is not usable, so treat the release as already in Limited Support, which every other row of its age is.

On 3.1.1 or older: you are past Support Discontinued already; 3.1.1 since October 1, 2026, 3.1.0 since August 5, 2026, 3.0.0 since April 29, 2026, and every 2.x release since December 17, 2025 or earlier. SonicWall's policy for these is help with the upgrade and nothing else. Move now.

On 4.1.0 or 4.2.0: note your Limited Support date (November 26, 2026 or December 23, 2026) and watch the table for the next feature release; on this product the gap between releases has been short and the window from release to Support Discontinued has run anywhere from six months to eighteen.

Everyone: the SonicWall NSM page carries every version with its Software Release, Limited Support and Support Discontinued dates, re-read field by field from SonicWall's table at every build, so a new row shows up there before it shows up here. The SonicWall firewalls and SonicOS pages do the same for the appliances NSM manages and the firmware they run.

Frequently Asked Questions

Related

• SonicWall Network Security Manager (NSM) On-Prem — every version with its Software Release, Limited Support and Support Discontinued dates
• SonicWall firewalls — the TZ, NSa and NSsp appliances NSM manages, with SonicWall's five hardware phases
• SonicOS — the firewall operating system NSM administers, with its own release lifecycle
• The EOS Edge Device List — end-of-support status for every internet-facing platform we track, SonicWall's firewalls among them
• How we verify our dates — the rules every number on this site is held to