Client Access Licenses Explained - Types, User CALs & Microsoft Licensing

When a company sets up Microsoft Windows Server, buying the server license is only one part of the licensing decision. The next question is how users and devices will access that server environment. This is where client access licenses become important.

For IT teams, choosing the right access license is not simply about finding the lowest price. The decision should reflect how employees use the server, whether devices are shared, whether users connect remotely, and which Windows Server version is deployed. A mismatch between the actual environment and the selected license can create unnecessary licensing complexity later.

WinLicense provides Microsoft licensing products for businesses and IT teams in India, including Windows Server, Windows Server Remote Desktop Services, and CAL options for different server versions. The current catalogue includes Windows Server 2019, 2022, and 2025 products, along with User CAL and Device CAL options for Remote Desktop Services.

What Are Client Access Licenses?

Client access licenses are used to provide access rights for users or devices connecting to applicable Microsoft server services. The server license and the access license address different parts of a Microsoft server environment. This distinction matters when planning a business deployment. An organization may have a properly licensed Windows Server but still need appropriate CAL coverage for the users or devices accessing its services.

Microsoft licensing can be based on a user or a device depending on the applicable licensing model. A company where employees work across multiple computers can have different requirements from a company where several employees share the same workstation.

For organizations reviewing their server requirements, the Windows Server licensing products available from WinLicense provide options for Windows Server 2019, 2022, and 2025 in Standard and Datacenter editions.

Microsoft User CAL vs Device CAL

The two common licensing approaches are based around the user or the device.

Microsoft User CAL

A Microsoft client access license based on a user is associated with an individual person rather than one particular device. This approach can be useful when the same employee accesses server resources from multiple devices.

A user based model can make sense for employees who regularly move between office computers, laptops, and other devices. Instead of managing licensing around every endpoint used by that employee, the licensing approach is aligned with the individual user.

WinLicense currently lists the Windows Server 2025 Remote Desktop Services 1 User CAL as a yearly product priced at ₹949. The product is specifically listed as a User CAL for Remote Desktop Services.

Microsoft Device CAL

A device based approach associates the license with a particular device. This can be useful where multiple employees use the same workstation or terminal.

Consider an organization with shared computers. Licensing around individual users may not necessarily reflect the way those systems are actually used. A device based approach can instead align licensing with the shared endpoint.

WinLicense lists the Windows Server 2025 Remote Desktop Services 1 Device CAL at ₹15,989 yearly. The product catalogue also includes Device CAL options for Windows Server 2022.

User CAL and Device CAL: What Is the Difference?

The main distinction between User CALs and Device CALs is the licensing basis.

User CAL

A User CAL is associated with an individual user. The WinLicense Windows Server 2025 Remote Desktop Services 1 User CAL is described as a user based license for RDS access, allowing the same user to connect from unlimited devices. This can be relevant for employees who work across different computers or locations.

For example, an employee might use a desktop in the office and a laptop while working remotely. A user based approach focuses on the individual rather than licensing each device separately. Businesses considering this model can review the Windows Server 2025 Remote Desktop Services 1 User CAL available through WinLicense.

Device CAL

A Device CAL is associated with a particular device. The WinLicense Windows Server 2025 Remote Desktop Services 1 Device CAL is designed so that multiple users can connect through the licensed device. This can be relevant in environments where computers are shared between employees.

For example, a shared workstation used by different employees may require a different licensing approach from a setup where each employee has a dedicated computer.

The Windows Server 2025 Remote Desktop Services 1 Device CAL provides a specific example of this licensing model.

There is no single model that fits every business. The appropriate choice depends on the organization's working pattern, device usage, and the Microsoft licensing requirements applicable to its environment.

How RDS CALs Fit Into Server Licensing

Remote Desktop Services is used by organizations that need remote access to Windows desktops and applications. When RDS is part of the server environment, businesses need to consider the relevant RDS licensing requirements in addition to their Windows Server deployment.

WinLicense currently lists Remote Desktop Services products for Windows Server 2019, Windows Server 2022, and Windows Server 2025. Its catalogue also includes separate User CAL and Device CAL products. For businesses evaluating remote access, the Windows Server Remote Desktop Services products provide options across multiple Windows Server versions.

The distinction between Windows Server CALs and RDS CALs is important when planning an environment. A Windows Server CAL relates to access to applicable Windows Server services, while an RDS CAL is associated with applicable Remote Desktop Services access. Businesses should verify the requirements for their particular deployment before purchasing.

User CAL or Device CAL: Which One Should You Choose?

There is no single option that is automatically suitable for every organization. The right choice depends on how users and devices interact with the server environment.

Client Access Licenses and Remote Desktop Services

Remote Desktop Services, commonly known as RDS, allows users to access Windows desktops and applications remotely. When an organization uses RDS, its licensing requirements need to be considered separately from the underlying Windows Server deployment. WinLicense currently offers Remote Desktop Services products for Windows Server 2019, 2022, and 2025. The catalogue includes both User CAL and Device CAL options for supported versions.

This is particularly important for organizations setting up remote access for employees. Purchasing a Windows Server license should not automatically be treated as completing every licensing requirement for an RDS environment.

If your organization is specifically setting up remote access, the Windows Server Remote Desktop Services range is a useful place to compare the available version specific products before purchasing.

Choosing CALs for Windows Server 2019, 2022 or 2025

The Windows Server version should be confirmed before selecting an access license. WinLicense currently lists Windows Server products for 2019, 2022, and 2025. Its catalogue also provides corresponding Remote Desktop Services products for these server versions.

For an organization running Windows Server 2025, the Windows Server 2025 Standard License is one of the server licensing options listed by WinLicense. For organizations using an older deployment, WinLicense also lists Windows Server 2022 Standard licensing alongside its 2022 Remote Desktop Services products.

This version check is an important procurement step. Before ordering, confirm the Windows Server version, identify whether the requirement is for standard server access or RDS access, and then select the applicable CAL product.

Get the Right Client Access License for Your Environment

Choosing client access licenses should begin with your users, devices, server version, and access method. If employees work across multiple devices, investigate the User CAL model. If multiple people work through shared devices, investigate the Device CAL model. If Remote Desktop Services is part of the deployment, review the appropriate RDS CAL separately.

Need help selecting the right CAL? Contact WinLicense. The team can help you identify the relevant product before you place the order.

Frequently Asked Questions

1. What are Client Access Licenses and why are they required?

Client Access Licenses, or CALs, are used to provide access rights for users or devices connecting to applicable Microsoft server services. The required licensing approach depends on how the server environment is accessed and whether licensing is based on users or devices.

2. What is the difference between a Microsoft User CAL and a Device CAL?

A Microsoft User CAL is associated with an individual user, while a Device CAL is associated with a specific device. User CALs can suit employees who access server resources from multiple devices, while Device CALs can be relevant where several users share a particular workstation or device.

3. Do I need an RDS CAL for Remote Desktop Services?

If your organization uses Remote Desktop Services, the applicable RDS licensing requirements should be reviewed separately from the underlying Windows Server license. The appropriate User CAL or Device CAL depends on how users access the RDS environment.

4. Which CAL should I choose for Windows Server 2019, 2022, or 2025?

Start by confirming your Windows Server version, the number of users and devices requiring access, whether devices are shared, and whether Remote Desktop Services is being used. These details help determine which available CAL product is appropriate for your environment.

5. Does WinLicense provide Microsoft User CALs and Device CALs?

Yes. WinLicense offers Remote Desktop Services User CAL and Device CAL products for supported Windows Server versions, including Windows Server 2019, 2022, and 2025. Customers can review the available product options based on their server version and access requirements.

6. How can I choose the right Client Access License for my business?

Review your Windows Server version, user count, device count, shared device usage, and Remote Desktop Services requirements before purchasing. If you are unsure which option fits your setup, provide these details to WinLicense so the relevant Microsoft licensing product can be identified.