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Buying used software licenses legally

Many companies pay more for Microsoft licenses than they need to, because the used market is considered a gray area. It is not. This page explains how the trade works, which documentation belongs with it and what to watch for when you buy.

What a used license is

A used license is a right of use that a company once acquired permanently and no longer needs. Typical reasons are a move to different systems, a site closure or a smaller workforce. The right of use continues to exist and may be passed on.

Technically this license is no different from a newly bought one: same software, same updates, same feature set. The difference lies in the price and in the fact that a clean proof of origin has to be supplied with it.

Why a perpetual license pays off

A subscription costs money every month and ends with the last payment. A perpetual license is paid once and you use it for as long as the version is in support. With a used volume license the entry price is lower still, so the point at which it pays for itself comes sooner.

Subscription
Running costs
Monthly, per user or per workstation
Payments run for as long as you use the software
After five years you have paid for five years and own nothing
Access ends with the last payment
New features arrive continuously
Sensible where user numbers fluctuate or the need is temporary
Used perpetual license
A single purchase
Paid once, usable without any time limit
One payment, no running costs afterwards
The right of use stays with you permanently
Security updates until the version reaches end of support
The feature set stays as it is
Sensible with a settled group of users and long-term use

The rule of thumb from practice: if you run an application in the same version for longer than about three years, the perpetual license works out cheaper. With a used volume license that threshold moves forward again, because the entry price sits well below list. Multiply your monthly amount by 36 or 60 months and set it against the one-off price.

Which licenses can be transferred

Not every type of license can be passed on. That distinction decides whether a purchase is legally sound.

Büroarbeitsplatz mit zwei Bildschirmen, sinnbildlich für Arbeitsplatzlizenzen im Unternehmen

Transferable

  • Volume licenses from Open License and Open Value programs
  • Perpetual licenses that were paid for once
  • Server and client access licenses from the European Economic Area (EEA)
  • Individual licenses from volume agreements that can be split

Not transferable

  • Subscriptions with a recurring fee, such as Microsoft 365
  • Licenses from countries outside the European Economic Area
  • Education and government licenses tied to a defined group of users
  • Developer licenses from subscription programs
Frage 1

Where does the license come from?

A reputable provider names how the license was acquired and can document its origin.

Frage 2

Is there a confirmation of deletion?

The previous owner has to confirm in writing that they no longer use the software.

Frage 3

Is the chain of title complete?

Every intermediate step from the first purchase to you has to be documented.

Frage 4

Does the license come from the EEA?

The exhaustion principle applies only within the European Economic Area (EEA).

Server + CAL or core-based licensing

With server products the licensing model decides four-figure sums. Which one is cheaper hangs on a single question: is the number of people accessing the server known? We set both variants against each other using your figures.

Server + CAL
Licensed by user
A server license plus one client access license (CAL) per user or device
Cheaper with a settled, manageable group of users
The number of processor cores plays no part
Every point of access has to be countable
Indirect access through a business application counts too
Typically up to around 25 to 30 users
Core-based licensing
Licensed by processor core
All physical cores on which the instance is able to run
Any number of points of access covered, without individual licenses
Mind the minimums: 16 cores per server, 8 per processor
With virtual machines the cores assigned are what count
Mandatory as soon as the number of people accessing is unknown
Typically from around 25 to 30 users upwards

The threshold sits where the sum of the client access licenses becomes more expensive than the core licenses. As soon as an application is reachable from outside, a web shop or a customer portal for instance, the number of people accessing it can no longer be determined and core-based licensing is the only option. Tell us your user numbers and your hardware and we will set both models against each other.

The most common oversight: the forgotten third license

Anyone working on a server through remote desktop needs three licenses rather than two. Access works technically without the third one, but in a license audit the gap comes to light reliably.

1
Windows Server
The server license permits the server to be operated. It says nothing about who is allowed to use it.
2
Windows Server CAL
The client access license permits a user or device to reach the server's services. Without it, that access is not licensed.
3
RDS CAL
The Remote Desktop client access license permits the session on the server itself. It is added to the other two and does not replace them. This third one is the one most often forgotten.

The gap does not show up technically: once the 120-day trial period has expired, the Remote Desktop service refuses new connections until valid client access licenses are stored on a licensing server. Until then everything carries on unremarkably, and it is precisely in that window that the licensing gets overlooked in many environments.

Frequently asked questions

Is buying used licenses really lawful?

Yes, and it is confirmed at the highest judicial level. In 2012 the Court of Justice of the European Union ruled that permanently acquired software licenses may be resold. The German Federal Court of Justice confirmed this for Germany and expressly for Microsoft volume licenses.

Does the software work exactly like a new one?

Yes. It is the same software with the same feature set. You receive security updates to the same extent as with a newly bought license.

Does Microsoft have to approve the purchase?

No. Under the case law the manufacturer's consent is not required, and there is no obligation to register either.

How much do I save against buying new?

The gap to list price is considerable and depends on product, version and quantity. Tell us what you need and we will work out the concrete difference for you.

What happens in a license audit?

You present the documentation you received with the license. It proves the complete chain of title and thereby the lawfulness of your use.

Do you buy licenses too?

Yes. If your company no longer needs its licenses, we value your holdings and make you an offer. You will find the details on our page about selling licenses.

Ask us for the right licenses

Tell us the product and the quantity. You will receive a concrete, no-obligation quote.