MicrosoftWindows Server 2025 CAL
About this licence
Windows Server 2025 CAL (Client Access License) permits a user or device to legally connect to a server running Windows Server 2025. The CAL does not include the server software itself; it provides authorised access to the services and functions offered by a Windows Server 2025 installation.
Designed to help organisations manage and customise access, the CAL lets businesses control who or what connects to their corporate network. The licence is perpetual and available as user or device options, and it applies to the Standard and Datacenter editions of Windows Server 2025.
- Perpetual licence — no annual renewals required
- Required for legal access to Windows Server 2025 services
- Compatible with Standard and Datacenter editions of Windows Server 2025
- Available as user or device CALs to suit access needs
- Helps manage and regulate corporate network access
Product details
- Brand
- Microsoft
- Category
- Servers
- Devices
- 5 devices
- Duration
- Lifetime
- Platform
- Windows
- License
- Standard
- Delivery
- Instant digital delivery
- Invoice
- EU invoice included
System requirements
Minimum
- 64-bit 1.4 GHz processor
- 512 MB RAM (2 GB with Desktop Experience)
- 32 GB disk space
- Gigabit (10/100/1000baseT) Ethernet
Recommended
- Multi-core 2 GHz+
- 8 GB+ RAM
- SSD storage
Activation & installation overview
- 1Download the Media Creation Tool from Microsoft’s official site.
- 2Create install media or upgrade in place (matching edition).
- 3Complete setup — choose ‘I don’t have a key’ if asked.
- 4Settings → Activation → Change product key, then enter your key.
This is a general activation overview; publisher screens can vary by edition and version.
Frequently asked questions
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