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Office LTSC 2024 vs Microsoft 365 Apps: The Locked-Down Desktop Choice

10 min read Updated October 4, 2026 Microsoft Licensing Guides

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Office LTSC 2024 is a perpetual, volume-licensed build that never gains features and stops receiving updates in October 2029. Microsoft 365 Apps updates continuously and must reach the licensing service at least every 30 days. LTSC is for machines that genuinely cannot change – and it is no longer the only way to license a shared device.

  1. Buy LTSC for machines under change control, in validated environments, or with no path to the internet at all.
  2. Buy Microsoft 365 Apps for ordinary staff on their own devices, and slow the release channel if updates arrive too often.
  3. Do not buy LTSC merely because a device is shared. Microsoft sells Microsoft 365 Apps for enterprise (device) through Enterprise Agreements for exactly that case.
  4. Do not buy LTSC for a terminal server. Shared computer activation covers plans that include Microsoft 365 Apps for enterprise, plus Business Premium.
  5. Check Publisher before committing. It is not in Office LTSC 2024 and Microsoft is retiring it in 2026.
  6. Run both where the estate needs both. Nothing prevents LTSC on the frozen machines and subscriptions everywhere else.

If the machine is genuinely isolated or under validation, stop here: LTSC is the answer. Below is what the two licensing shapes actually cost you, and the two device-licensing routes people miss.

Why it happens

LTSC and Microsoft 365 Apps install largely the same applications and open the same files. Everything else about them differs: how they are bought, how they update, whether they need to reach the internet, and which of the two Microsoft actually wants you to deploy.

Office LTSC 2024 is volume-licensed only and does not appear in retail channels. Microsoft publishes it as Office LTSC Standard 2024 and Office LTSC Professional Plus 2024 on Windows, with Office LTSC Standard for Mac 2024 alongside, plus Project Standard and Professional 2024 and Visio LTSC Standard and Professional 2024. Professional Plus contains Access, Excel, OneNote, Outlook, PowerPoint and Word. It follows the Fixed Lifecycle Policy with five years of mainstream support and no extended phase, ending 10 October 2029.

Microsoft 365 Apps is a subscription. A licensed user may install on five PCs or Macs, five tablets and five phones, and if they exceed ten devices the one with the longest period of non-use is deactivated automatically. The apps check in daily and must reach the licensing service at least once every 30 days; past that they enter reduced functionality mode, in which you can view and print but not edit or create.

The machine genuinely cannot change

You have this one if Equipment controllers driven from Excel, laboratory systems in a validated environment, machines on isolated networks, terminals where a moved menu produces a support call.

  1. LTSC is the correct product here and it is not a compromise. A build that never changes is the requirement.
  2. The same logic covers change control so heavy that the paperwork for an update costs more than the update saves. One version bump every few years is straightforwardly cheaper to own than one a month.
  3. An air-gapped machine cannot use Microsoft 365 Apps at all, because the 30-day check-in is not optional.
  4. Note what LTSC omits deliberately: no feature updates, no real-time collaboration, no AI capability, no Publisher, and ActiveX controls disabled by default.

You picked LTSC because the device is shared

You have this one if A shop floor terminal, a nurses’ station or a shift-worked machine, and a per-user subscription looks like it means licensing everyone who touches it.

  1. This is the most common wrong turn in the comparison. Microsoft publishes two routes that solve it without LTSC.
  2. Device-based licensing: Microsoft 365 Apps for enterprise (device) for commercial customers through an Enterprise Agreement, or Microsoft 365 Apps for Education (device) through Enrollment for Education Solutions. It needs Microsoft 365 Apps 1907 or later, Windows 11, Windows 10 General Availability Channel, Windows Server 2019 or 2022, and the device Entra joined or Entra hybrid joined. No user activation and no Entra account are required at sign-in.
  3. Shared computer activation: available on any plan that includes Microsoft 365 Apps for enterprise, on plans including desktop Project or Visio, and on Microsoft 365 Business Premium. It is not available on Business Standard or other plans carrying Microsoft 365 Apps for business, and not for Office for Mac.
  4. Both keep the cloud capability, the portability and the ability to move a licence, which LTSC gives up.

You want updates to arrive less often

You have this one if Nothing is validated or isolated; the estate is simply tired of monthly change.

  1. Not LTSC. Microsoft 365 Apps has release channels precisely so estates can take features on a slower cadence.
  2. Changing channel costs nothing and keeps the cloud capability, the per-user portability and the ability to reassign a licence between people.
  3. LTSC in this situation buys a build that falls further behind every year and a migration project in 2029.

Full reference

LTSC 2024 against Microsoft 365 Apps

Dimension Office LTSC 2024 Microsoft 365 Apps
Licence type Perpetual, bought once Subscription
Buying route Volume licensing only Subscription, through most channels
Editions LTSC Standard 2024, LTSC Professional Plus 2024, LTSC Standard for Mac 2024 Apps for business, Apps for enterprise, and the plans containing them
Assignment Device User by default; device-based licensing available on Apps for enterprise (device) via EA
Shared machines Covered by the device licence Shared computer activation, or device-based licensing
Feature updates None Continuous, on the channel you select
Support Five years, ending 10 October 2029, no extended phase While the subscription runs
Internet requirement None At least once every 30 days, or reduced functionality mode
Install rights One licensed device Five PCs or Macs, five tablets, five phones per user
Publisher Not included; retired in 2026 Not a reason to choose either; Publisher is being retired
Cloud, collaboration and AI features Deliberately excluded Included or available as add-ons
ActiveX controls Disabled by default Governed by policy

Counting the right unit before you price anything

Count users and count devices first. If devices are far fewer than users, a device-assigned licence may cost less regardless of anything else – but the choice is then between Office LTSC 2024 and Microsoft 365 Apps for enterprise (device), not between LTSC and a per-user subscription. If users are fewer than devices, the per-user subscription almost certainly wins because one seat covers up to five PCs or Macs plus tablets and phones.

The device-licensing route has an access condition worth knowing before you plan around it: Microsoft sells Microsoft 365 Apps for enterprise (device) through Enterprise Agreement and Enterprise Agreement Subscription, and Microsoft 365 Apps for Education (device) through Enrollment for Education Solutions. If neither agreement is available to you, shared computer activation on a plan that includes Microsoft 365 Apps for enterprise, or on Business Premium, is the route that remains.

The costs of choosing LTSC by mistake

LTSC never gains a feature, so the estate falls further behind every year until October 2029 arrives and you migrate anyway. It omits the cloud-attached collaboration most organisations now build document workflows around, which produces two classes of user who cannot work the same way. And because it is licensed per device, an organisation with more people than machines is paying for the wrong unit and losing the five-device install rights it would otherwise have.

The reverse mistake is rarer but real: putting Microsoft 365 Apps on machines that cannot reach the licensing service. Activation is not perpetual, and a device kept off the network past 30 days drops into view-and-print mode. If a machine genuinely never connects, it is not a subscription candidate at any price.

Deploying both in one estate

Running both is normal and is usually the correct design. LTSC covers the machines that must not change; Microsoft 365 Apps covers everyone else. The one rule is not to install both builds on the same machine, because they use different update mechanisms and will interfere with each other. Deploy each with the Office Deployment Tool from its own source, and keep the two groups separate in your configuration management.

Which to deploy, by situation

  • Ordinary office staff with their own laptops: Microsoft 365 Apps, on a slower release channel if you want fewer changes.
  • A production line terminal, laboratory instrument PC or validated system: Office LTSC 2024, licensed per device.
  • An air-gapped or permanently isolated machine: LTSC, because the 30-day check-in cannot be satisfied.
  • A shared machine used by many people in turn: compare Microsoft 365 Apps for enterprise (device) and shared computer activation before reaching for LTSC.
  • A terminal server or virtual desktop host: shared computer activation on a qualifying plan, not LTSC.
  • An organisation that just wants updates to slow down: change the update channel. It costs nothing.

When a licence is the actual fix

For the machines that genuinely must stay still, Office LTSC 2024 Professional Plus is the licence that lets them, and it is bought through volume licensing rather than off a shelf. Arco supplies Office LTSC 2024 in Standard and Professional Plus alongside Microsoft 365 Apps subscriptions, and there is no reason not to hold both in one estate. Tell us how many machines are genuinely isolated or change-controlled and how many are ordinary desktops, and we will licence each group properly. If your reason for asking about LTSC is that a device is shared rather than frozen, we will point you at device-based licensing or shared computer activation instead, both of which keep the cloud capability LTSC gives up. If it is simply that updates arrive too often, the slower release channel costs nothing to switch to.

Questions people ask about this

Can I buy Office LTSC without a volume licensing agreement?

No. Microsoft publishes Office LTSC 2024 as a volume-licensed product only; it does not exist in retail channels. A reseller can set up an appropriate agreement even for a small number of licences, but the product is not available any other way.

Does LTSC receive security updates?

Yes, until 10 October 2029. Office LTSC 2024 follows the Fixed Lifecycle Policy with five years of mainstream support and no extended phase, so nothing arrives after that date. The absence of feature updates does not mean the absence of patches, but note this generation carries a shorter term than older perpetual Office releases.

Do I need LTSC to license a shared computer?

No, and this is the most useful thing to know before buying. Microsoft sells Microsoft 365 Apps for enterprise (device) through Enterprise Agreements for exactly this case, and shared computer activation is available on any plan that includes Microsoft 365 Apps for enterprise as well as on Microsoft 365 Business Premium. Shared computer activation is not available on Business Standard or other plans with Microsoft 365 Apps for business.

Can one person have LTSC on a work machine and a subscription on their laptop?

Yes, and it is common. The two cover different things: LTSC covers the device, the subscription covers the person and permits five PCs or Macs plus tablets and phones. Do not install both builds on the same machine, because they update through different mechanisms and will interfere.

Is Publisher in Office LTSC 2024?

No. Microsoft states that Office LTSC 2024 does not include Publisher, which is being retired in 2026 and will not be supported after October of that year. If Publisher is part of why you are considering a perpetual suite, plan the replacement rather than the purchase.

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