Microsoft Server 2019 Datacenter Online key License

How online activation works: key by email, enter it, activated

Microsoft Windows Server 2019 Datacenter — Online Key

$14.99

Genuine Windows Server 2019 Datacenter license key with fast delivery. Unlimited Hyper-V virtual machines and Shielded VMs. Ideal for heavily virtualized datacenters.

What happens after you pay

Our team checks your order and emails your key — usually within a few minutes.
Your key and a step-by-step activation guide also stay on your order page.

Genuine Microsoft license Personal support chat 7 days to activate — guaranteed Secure checkout by Stripe

SKU: KL-WINSRV19-DC Categories: Shop, Windows Server Tags: Datacenter, Online Key, Server 2019, Windows Brand: Microsoft

Activation Online — enter the key and it activates

License One-time purchase — permanent

Covers 1 server

Warranty Activate within 7 days — free replacement if it doesn't work

Delivery Checked by our team — usually within a few minutes

Buy Windows Server 2019 Datacenter Key — Unlimited Virtualization

Get a genuine Windows Server 2019 Datacenter key with fast delivery. Unlimited Hyper-V VMs, Shielded VMs, Kubernetes support, Storage Spaces Direct. This Windows Server 2019 Datacenter key is built for enterprise datacenters and heavily virtualized environments.

What You Get

1x genuine Windows Server 2019 Datacenter key
Fast delivery
Unlimited VMs
Global activation

How to Activate

Download from Microsoft
Enter your Windows Server 2019 Datacenter key
Activates through Microsoft servers

See our server guide. Also see our Server 2019 Standard key if you need fewer VMs.

Is This Key Genuine?

Genuine key. Your Windows Server 2019 Datacenter key activates on official servers. Covered by our activation guarantee.

One Windows Server 2019 Datacenter activation key for one server installation, delivered digitally.
Licenses unlimited Windows Server guest VMs on that host, plus the Datacenter-only features: Storage Spaces Direct at up to 4 PB per cluster, unrestricted Storage Replica, Shielded VMs for Windows and Linux guests, and the software-defined networking stack.
Works with either the Server Core or the Desktop Experience installation of Windows Server 2019, and with Windows Admin Center, which Microsoft supplies as a free separate download.
Provides the Datacenter host required for Automatic Virtual Machine Activation of 2019, 2016 and 2012 R2 guests.
Activation guide covering online and telephone activation, plus guidance on obtaining official Microsoft 2019 installation media.
Delivered to your order page, usually instantly and at most a few minutes after payment. We email you a link too.
Perpetual license, with Microsoft extended support running to January 9, 2029.
Not included: Windows Server 2019 CALs, RDS CALs, installation media, and core licenses beyond the 16 physical cores that a base Datacenter license covers.

Licensing model: per physical core, with a minimum of 8 core licenses per processor and 16 per server, and every physical core covered. Core licenses are sold in 2-packs and 16-packs.
Virtualization rights: unlimited Windows Server operating system environments and unlimited Hyper-V-isolated containers on the licensed host, against two OSEs per complete license assignment on 2019 Standard.
CALs sold separately: a Windows Server 2019 or later User or Device CAL for every person or device that authenticates. 2016 CALs do not cover a 2019 server. RDS CALs are additional for Remote Desktop.
Storage Replica: unrestricted on Datacenter. 2019 Standard is limited to one partnership, one replicated volume, and a maximum volume size of 2 TB.
Other Datacenter-only features: Storage Spaces Direct, Shielded VMs including Linux guests, and the software-defined networking stack.
Scale limits: up to 24 TB of RAM and 512 logical processors per Hyper-V host; failover clusters of up to 64 nodes, 8,000 VMs per cluster and 1,024 VMs per node; Storage Spaces Direct clusters of 2 to 16 servers and up to 4 PB raw capacity.
Minimum hardware: 1.4 GHz 64-bit processor with SLAT for Hyper-V, 1 GB RAM for Server Core (2 GB with Desktop Experience), 32 GB of disk, Gigabit Ethernet.
Version compatibility: no new Active Directory domain or forest functional level was introduced in 2019, so 2016 remains the highest available. In-place upgrade is supported from Windows Server 2012 R2 and 2016.
Management: Windows Admin Center is a free separate download from Microsoft, not part of the installation media. Server Core and Desktop Experience cannot be switched after setup.
Support lifecycle: mainstream support ended January 9, 2024; extended support ends January 9, 2029.
Downgrade and down-edition rights: per the Product Terms for your licensing channel. 2019 introduced no new AD functional level, so a down-level 2016 build changes nothing in your directory - but the 2016 media is yours to supply.

Purchase — Complete your order securely
Receive Key — Your key appears on your order page right after payment, and we email you a link. Click “Reveal key” to see it
Activate — Enter the key during product setup or in Settings > Activation

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How this key works

Enter the key in Server Manager or with slmgr /ipk; it activates online.

Reinstalling

After reinstalling the same server, enter the key again.

New hardware

One license covers one server.

Compare all key types — OEM, Retail, phone, Microsoft account →

Frequently Asked Questions

Storage Spaces Direct scaled to 4 PB per cluster and gained deduplication and compression on ReFS, nested resiliency for two-node clusters and a USB file share witness. Shielded VMs added Linux guests, VMConnect troubleshooting and an offline mode for branch offices that lose contact with the Host Guardian Service. System Insights and Windows Admin Center arrived across both editions.

Standard's Storage Replica is deliberately capped at one replication partnership, one replicated volume, and that volume no larger than 2 TB. Datacenter removes all three limits, so you can replicate as many volumes as the hardware sustains, at any size, across multiple partnerships. That is what a genuine two-site disaster recovery pairing normally needs.

Each pair of virtual machines on Standard needs another complete assignment covering all 32 physical cores. Twelve VMs means six assignments, 192 core licenses, against 32 core licenses for Datacenter with no ceiling. Standard also restricts the host operating system to running Hyper-V and managing guests once both of its permitted OSEs are in use.

No, it runs on Standard too. The 2019 orchestrator inventories file servers going back to Windows Server 2003, plus Linux Samba shares, transfers the data with permissions and local users intact, then cuts over by taking the old server's name and IP address. Datacenter matters for the destination instead: unlimited guest VMs and the storage features beneath them.

A Hyper-V host addresses up to 24 TB of memory and 512 logical processors. Failover Clustering supports up to 64 nodes and 8,000 virtual machines per cluster, with 1,024 per node, and Storage Spaces Direct clusters run 2 to 16 servers holding up to 4 PB of raw capacity. Every physical core still has to be licensed.

Yes, and without limit. The operating system environment count applies to Windows Server guests, which Datacenter makes unlimited anyway, while Linux guests carry their own distribution terms and consume no Windows entitlement. 2019 is also the first release where Shielded VMs protect Linux guests, with Ubuntu, Red Hat Enterprise Linux and SUSE supported inside a guarded fabric.

Usually instantly, and at most a few minutes depending on demand and stock. Your key appears on your order page as soon as your payment is confirmed, and we email you a link to it. The key stays hidden until you click Reveal key.

Send our support team your order number and a screenshot of the activation error. Most problems are an edition mismatch or a typo, and we'll help you fix it. If the key really is faulty, we send a free replacement within 24 hours — or a full refund if we can't replace it.