Windows Server 2025
Remote Desktop Services (50 Devices) for Windows Server 2025
Windows Server 2025 licences — the latest version of Microsoft’s server operating system. Available in Standard (limited virtualisation) and Datacenter (unlimited virtualisation). Both editions cover 24 cores. Extended support until October 2035.
Need a database engine? SQL Server 2025 Standard. Previous version? Windows Server 2022.
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Windows Server 2025 Licences
Windows Server 2025 is the latest version of Microsoft’s server operating system, released in November 2024. It brings significant improvements in security, Hyper-V virtualisation, storage management and hybrid connectivity with Azure. It is available in two editions: Standard and Datacenter.
| Edition | Cores | Virtualisation | Ideal for | |
|---|---|---|---|---|
| Windows Server 2025 Standard | 24 cores | Up to 2 Hyper-V VMs | Physical servers, SMBs, environments with few VMs | See price |
| Windows Server 2025 Datacenter | 24 cores | Unlimited Hyper-V VMs | Heavy virtualisation, data centres, private cloud | See price |
Key new features in Windows Server 2025
Windows Server 2025 is the most significant server OS update since 2019. These are the main improvements over Windows Server 2022:
| Feature | What it does | Practical benefit |
|---|---|---|
| Hot-patching | Applies security patches without restarting the server | Less downtime; ideal for 24/7 environments |
| Enhanced Active Directory | New AD DS 2025 functional level with 4096-bit key support and strengthened Kerberos authentication | Greater security in domain environments |
| NVMe over Fabrics | Access remote NVMe storage over the network | Shared storage performance equivalent to local disks |
| Improved Storage Spaces Direct | Performance and resiliency improvements for hyper-converged storage | Faster and more reliable HCI clusters |
| Hyper-V GPU partitioning | Share a physical GPU across multiple VMs (GPU-P) | AI/ML inference workloads in VMs without a dedicated GPU |
| SMB over QUIC | Share SMB files securely over the internet without a VPN | Remote access to file servers without VPN tunnels |
| Bluetooth and Wi-Fi on Server | Native Bluetooth and wireless network support | Useful for edge computing and IoT at unwired locations |
| TLS 1.3 and DNS over HTTPS | Updated encryption by default for network communications and DNS resolution | Modern network security with no extra configuration |
Windows Server 2025 Standard vs Datacenter
The fundamental difference between the two editions is virtualisation. Standard allows up to 2 Hyper-V virtual machines; Datacenter allows unlimited VMs. The remaining differences are advanced cloud and security features:
| Feature | Standard | Datacenter |
|---|---|---|
| Cores included | 24 | 24 |
| Hyper-V VMs included | 2 VMs | Unlimited |
| Windows containers | Unlimited | Unlimited |
| Isolated Hyper-V containers | 2 | Unlimited |
| Hot-patching | ✔ | ✔ |
| Storage Spaces Direct | ✘ | ✔ |
| Storage Replica | Limited (1 volume, 1 partner) | Full (unlimited) |
| Shielded VMs | ✘ | ✔ |
| Software Defined Networking (SDN) | ✘ | ✔ |
| Ideal for | Physical server, AD, file server, DNS, DHCP, business apps | Hyper-V hosts, HCI, private cloud, data centres |
Rule of thumb: if the server runs roles directly (Active Directory, file server, DNS, applications) without virtualising, or virtualises at most 2 VMs, choose Standard. If it is a virtualisation host with 3 or more VMs, choose Datacenter.
Windows Server 2025 vs 2022
| Aspect | Windows Server 2022 | Windows Server 2025 |
|---|---|---|
| Release year | 2021 | 2024 |
| Extended support until | October 2031 | October 2035 |
| Hot-patching | Azure Arc only | Native (Standard and Datacenter) |
| Active Directory | Functional level 2016 | Functional level 2025 (4096 bits, strengthened Kerberos) |
| NVMe over Fabrics | No | Yes |
| GPU Partitioning (Hyper-V) | No | Yes |
| SMB over QUIC | Datacenter + Azure Edition only | Standard and Datacenter |
| Bluetooth / Wi-Fi | No | Yes |
| Ideal for | Stable environments not needing new features | New deployments, modern AD, hot-patching, edge |
Recommendation: for new installations, Windows Server 2025 is the logical choice with 4 additional years of support and improvements in security and performance. If you already run Windows Server 2022 and do not need hot-patching or the new AD functional level, it remains supported until 2031. See also Windows Server 2022.
Licensing: cores + CALs
Windows Server 2025 uses a licensing model based on processor cores plus CALs per user or device. Each licence covers 24 physical cores. If your server has more than 24 cores, you need additional licences.
| Concept | Detail |
|---|---|
| Server licence | Covers the operating system for 24 physical cores. Required on each server. |
| User CAL | Authorises 1 user to access any number of servers. Ideal when users work from multiple devices. |
| Device CAL | Authorises 1 device (PC, laptop, terminal) to access any number of servers. Ideal for shared fixed workstations used in shifts. |
| RDS CAL (Remote Desktop) | Required additionally if users connect via Remote Desktop (RDP). One RDS CAL per user or device using RDP. |
System requirements
| Component | Minimum requirement |
|---|---|
| Processor | x64-compatible, 1.4 GHz, supporting NX, DEP, CMPXCHG16b, LAHF/SAHF, PrefetchW and POPCNT (SLAT recommended) |
| RAM | Minimum 512 MB (2 GB for Desktop Experience; 16 GB+ recommended for production) |
| Disk | 32 GB minimum free space (SSD recommended) |
| Firmware | UEFI with Secure Boot (TPM 2.0 recommended for advanced security features) |
| Network | Ethernet adapter with minimum 1 Gbps throughput |
Which edition do I need?
| Scenario | Recommended edition | Why |
|---|---|---|
| Domain controller (Active Directory) | Standard | AD runs directly; no VMs needed |
| File server | Standard | Direct role on the physical server |
| Application server (ERP, CRM) | Standard | 1 server = 1 application, no virtualisation |
| SQL Server + application in 2 VMs | Standard | 2 VMs fit within the Standard licence |
| Hyper-V host with 5+ virtual machines | Datacenter | More than 2 VMs requires Datacenter |
| Hyper-converged cluster (HCI / S2D) | Datacenter | Storage Spaces Direct is Datacenter only |
| VDI / large-scale remote desktops | Datacenter | Each virtual desktop is a VM |
IT shop, service provider or systems integrator?
If you resell licences to your clients or manage server infrastructure, the La Tienda de las Licencias distributor programme offers exclusive pricing:
- 30% discount on Windows Server, SQL Server and RDS CALs
- 20% discount on all other software licences
- 10% discount on Microsoft 365
→ Apply for distributor access
Frequently asked questions
What is the difference between Standard and Datacenter?
Both editions share the same OS engine and cover 24 cores. The main difference is virtualisation: Standard allows up to 2 Hyper-V virtual machines, whilst Datacenter allows unlimited VMs. Datacenter also includes Storage Spaces Direct, Shielded VMs and Software Defined Networking, which are not available in Standard.
Do I need to buy CALs in addition to the server licence?
Yes. Every user or device accessing the server requires a CAL (Client Access Licence). You can choose between a User CAL (1 per user, access from any device) or a Device CAL (1 per device, any user may use it). RDS CALs are additional and only required if users connect via Remote Desktop.
Can I use Windows Server 2022 CALs with a 2025 server?
No. CALs must match or exceed the version of the server being accessed. To access a server running Windows Server 2025, you need version 2025 CALs. Server 2022 CALs only grant access to Server 2022 and earlier.
What if my server has more than 24 cores?
You need additional core licences. The base licence covers 24 physical cores. If your server has 32 cores, you must licence the extra 8 cores. Cores are licenced in 2-core packs with a minimum of 16 cores per physical processor. Contact us and we will help you calculate the exact licence.
Can I upgrade from Windows Server 2022 to 2025?
Yes. Microsoft supports in-place upgrades from Windows Server 2019 and 2022 to 2025. You can also perform a clean installation and migrate roles. We recommend testing the upgrade in a non-production environment first.
How long will I receive security updates?
Microsoft provides mainstream support until October 2030 (new features + security) and extended support until October 2035 (security updates only). That is 10 years of guaranteed security patches from release.
Are these licences legal?
Yes. We are La Tienda de las Licencias, a Spanish company operating under the Court of Justice of the European Union ruling C-128/11, which establishes that reselling legitimate software licences is legal throughout the EU. We issue a VAT invoice and provide a lifetime licence guarantee.
Do you deliver to Latin America, Africa and Asia?
Yes. At La Tienda de las Licencias we accept local-currency payments from Argentina, Chile, Colombia, Mexico, Peru, Ecuador, Costa Rica, Bolivia, Guatemala, Panama, Kenya, Nigeria, Indonesia, Malaysia and more countries. Delivery is digital and instant by email, regardless of your geographical location.
Can I install Windows Server 2025 in Server Core mode?
Yes. Both editions support installation in Server Core mode (command line and PowerShell only) or with Desktop Experience (full graphical interface). Server Core uses fewer resources, has a smaller attack surface and is Microsoft’s recommended option for most server roles.