FAQ: Microsoft Windows Server 2025 -- 1 Device CAL
1. What is Microsoft Windows Server 2025 -- 1 Device CAL?
Microsoft Windows Server 2025 -- 1 Device CAL is an access licence, not a programme or installation key for the system. CAL stands for Client Access License, which is the authorisation required when a device connects to a Microsoft Windows Server. In practice, this licence confirms that the specified device can legally use the server services in a company environment.
It is very important: CAL is not used to install Windows Server 2025. It is a licensing document that regulates access rights to the server. If a company already has a server with a basic licence, it often needs to purchase an additional CAL licence for users or devices.
2. How does Device CAL differ from User CAL?
The difference lies in who is assigned access rights:
- Device CAL is assigned to a specific device, such as a desktop computer, terminal, laptop, or other equipment that connects to the server.
- User CAL is assigned to a specific user, regardless of the number of devices they use.
Device CAL is a good choice when multiple people work on one computer, for example, at a reception, warehouse, sales point, or on production shifts. User CAL usually works better when one employee uses multiple devices, such as a desktop computer, laptop, and phone.
3. When is it worth choosing Device CAL instead of User CAL?
Device CAL is particularly worthwhile in shared environments. If a company has workstations used by different employees at different times, purchasing a licence for the device is often more economical and organisationally simpler.
Example: if five shift workers use one computer in a warehouse, 1 Device CAL is often sufficient, rather than 5 User CALs. On the other hand, if one salesperson works on three devices, 1 User CAL is usually more beneficial than 3 Device CALs. The choice should be based on the company's actual work model and server access method.
4. How many CAL licences do I need for legal operation?
The rule is simple: you need to have as many licences as required by your server access model.
If you choose Device CAL, you need a separate licence for each device that accesses Windows Server 2025. If 10 computers connect to the server, you will need 10 Device CALs in principle. If you choose User CAL, you need a licence for each user who uses the server's resources.
The number of required licences does not depend on how often someone connects, but on the access right itself. In the event of a licence audit, the company should be able to demonstrate that each access is covered by the appropriate licence. Therefore, before purchasing, it is worth counting the actual number of devices or users and selecting a more cost-effective model that complies with Microsoft's rules.
5. Can I legally use Windows Server 2025 without CAL?
In a typical company environment, no. The server licence alone usually does not suffice to allow users or devices to legally use the system services. CAL is an additional licensing element required to access the server.
Lack of appropriate CAL licences may mean non-compliance with Microsoft's licensing terms. This is important from both the company's legal security perspective and potential audits. It is also worth noting that in some scenarios, especially those related to remote desktop services, other types of authorisations may be required, such as RDS CAL, if the scope of use requires it.
6. Is this licence a product key or downloadable software?
No. This is a legal licensing document/access authorisation, not classic boxed software. When purchasing CAL, the customer is not buying a system installer, but the right to use the server in accordance with the licensing terms.
Therefore, the most important aspects are licensing compliance, correct sales documentation, legal origin, and the ability to demonstrate the purchase in the company. For many customers, the key aspect is that this is a solution for regulating access legality, not for installing a new system.
7. Can a Device CAL licence be transferred to another device?
In principle, a Device CAL licence is assigned to a specific device and should not be treated as a freely transferable resource "for the time being". In practice, the rules for assignment and potential transfer should be interpreted in accordance with Microsoft's licensing terms and purchase documentation.
The safest approach is to assign the licence to a permanent workstation and maintain internal records. In the event of equipment replacement, failure, or permanent removal of the device, it is worth maintaining documentation continuity and confirmation of why the assignment was changed. This allows the company to demonstrate the rationality and compliance of its actions during an audit.
8. What about licensing compliance and control in the company?
Licensing compliance means that the company has the appropriate legal basis for using the server and that the number of accesses corresponds to the number of licences purchased. In the case of CAL, it is not only important to purchase the licence but also to properly assign it to users or devices.
Good practice is to keep a simple register: device name, department, assignment date, licence type, and purchase document. Such records facilitate IT environment management and minimise the risk of errors. In case of doubts about the number of licences needed in a specific infrastructure, it is worth clarifying this before purchasing, rather than correcting deficiencies later.
9. Will I receive confirmation of legality, delivery, and a VAT invoice?
Yes, when purchasing this type of licence, sales formalities are crucial. The customer should receive a legally valid product with documented origin, as well as a sales document confirming the purchase. In practice, this means a secure form of delivering licensing information and a VAT invoice for the company.
It is worth noting that with CAL, the most important aspects are documents and licensing compliance, as this is not a physical medium or standard installation software. If you need to verify the details of your order, delivery method, or purchase documentation, you can do so before finalising your order.
10. How can I order and where can I get help before purchasing?
If you are unsure whether User CAL or Device CAL is better for you, it is best to consult on the number of users, devices, and work method in your company before purchasing. This allows you to avoid both an excess of licences and deficiencies that could cause non-compliance.
For questions about purchasing, licence legality, delivery method, VAT invoice, and selecting the appropriate number of CALs, you can contact us by phone at 00 800 121 1654. This makes it easier to choose a solution that complies with Microsoft's requirements and your company's real needs. You can also contact us at [email protected] for more information.