Microsoft Windows Server 2025 Standard (16 Core)
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Windows Server 2025 Datacenter ? Core Add-on (2 Core) License
The Datacenter edition of Windows Server 2025 is aimed at companies with the highest demands on scalability, virtualization and resilience. With the 2-core add-on license existing Datacenter installations can be flexibly expanded ? precisely tailored to the respective hardware requirements and workloads.
Licensing for large-scale systems
In the Datacenter edition, licensing is also based on physical CPU cores. The minimum requirement is 16 cores per server, and additional cores can be added via this 2-core extension license. It is ideal for complex infrastructures with a high number of virtual machines, cluster environments or container-based deployments.
Maximum virtualization ? without limitations
Windows Server 2025 Datacenter allows an unlimited number of virtual instances ? one of the key strengths of this edition. Combined with new features such as hotpatching without reboot, improved VM live migration across CPU boundaries, and native ReFS deduplication, the add-on license ensures that additional CPU cores are used efficiently and fully licensed.
Advantages at a glance:
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License to expand by 2 additional CPU cores
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Required for compliant scaling beyond the base license
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Ideal for virtualized workloads, clusters and highly available environments
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Seamless integration into hybrid and cloud-native structures
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OEM System Builder version (hardware-bound)
Technical requirements:
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Existing Windows Server 2025 Datacenter license (min. 16 cores)
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Add-on usable only as an extension, not as a standalone license
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Licensing in 2-core increments per physical core
| System requirements | |
|---|---|
| Processor | 1.4 GHz 64-bit processor (x64) with at least 2 cores. |
| Network | Gigabit Ethernet network adapter. |
| Memory | min. 2 GB RAM |
| Disk space | min. 32 GB available storage space |
| Display | A graphics card that supports a display resolution of at least 800 x 600. |
| (More detailed information is available from the manufacturer). Internet connection for updates and cloud services. | |
How do I receive the license key and download link?
This product is a download version. Within 15 minutes after receipt of payment you will receive the license key and the download link by e-mail. The product can then be downloaded, installed and activated online immediately.
Product safety details
Responsible person for the EU
Responsible for this product is the economic operator based in the EU:
Microsoft Ireland Operations Limited
One Microsoft Place
D18 P521 Leopardstown, Dublin 18
Ireland
https://support.microsoft.com/contactus
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