Server CALs & RDS
Client Access Licenses for Windows Server 2025: User and Device CALs, single or in 5-packs, and Remote Desktop Services User and Device CALs, single or in 50-packs. 2025 CALs also cover access to Windows Server 2022, 2019 and 2016.
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Client Access Licenses: user, device and RDS
Every user or device that accesses Windows Server needs a CAL. User CALs cover one person on any devices, which suits staff with a laptop and phone. Device CALs cover one shared device for any number of users. Remote Desktop users also need an RDS CAL on top.
Which CAL is cheaper for you?
Buy User CALs when people use several devices each, and Device CALs when several people share one device. Remote Desktop and RemoteApp users need an RDS CAL in addition to a Windows Server CAL.
| CAL | Licenses | Covers | Best for |
|---|---|---|---|
| User CAL | One named person | Any number of devices | Staff with a laptop and phone |
| Device CAL | One device | Any number of people | Shared PCs and shift work |
| RDS User CAL | One named person | Remote Desktop from any device | Remote workers |
| RDS Device CAL | One device | Remote Desktop for any user | Thin clients and kiosks |
Frequently asked questions
Do I need a Windows Server CAL as well as an RDS CAL?
Yes. Remote Desktop users or devices need both a Windows Server CAL and an RDS CAL.
Do CALs expire?
No. These are perpetual CALs. Windows Server 2025 CALs also cover access to earlier Windows Server versions.
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