How to Purchase and Activate Windows 11

Guide•7 min read•Last updated: Oct 16, 2026

How to Purchase and Activate Windows 11

This page describes how to activate a Windows 11 license on a Windows 11 VM. It covers checking the current activation status, purchasing a valid license, entering a product key, and verifying successful activation.

Atlantic.cloud provides Windows virtual machines without a pre-activated Windows license. Microsoft Windows licensing is not included in the price of the instance. Clients are responsible for ensuring that their Windows installation is properly licensed and activated using a Microsoft license that permits use in our hosting environment. Please consult the licensing instructions below or contact our technical support team if you need assistance.

Check the current activation status

  1. Open Settings → System → Activation. Note the Edition and the Activation status.
Windows 11 not activated

The expected activation state is "Not active" along with an error message — this is normal. Note the Edition (Pro, Pro for Workstations or Enterprise) — you will need a license that matches it.

Standard consumer (retail/OEM) Windows 11 keys do not include rights for use on a hosted virtual machine. Only licenses with active Software Assurance or a subscription (e.g., Microsoft 365 E3/E5, Windows 11 Enterprise E3/E5, or Windows VDA) are valid for hosted VM deployment.

Purchase a Windows 11 license

The license is not included in the price of the VPS/VDS. You are responsible for obtaining a valid Windows 11 license.

Requirements for your license:

  • Must match the installed edition: Pro, Pro for Workstations or Enterprise (check in the previous section).
  • Must include rights that permit use on a hosted virtual machine (e.g., Software Assurance, a subscription license, or equivalent). Standard retail or OEM keys do not include these rights and are not valid for use on a hosted VM.

Where to purchase:

  • Microsoft directly
  • An authorized Microsoft reseller or CSP partner

When purchasing, confirm with the vendor that the license is valid for use on a third-party hosted virtual machine (e.g., BYOL / Flexible Virtualization Benefit).

Activate via the Windows interface

  1. Open Settings → System → Activation.
  2. Click Change product key.
Windows 11 product key button
  1. Enter the 25-character product key.
  2. Click Next.
Windows 11 enter product key

Verify activation

  1. Open Settings → System → Activation. You should see "Active".
Windows 11 activated

If activation failed, check the error message against the table below:

ErrorCauseResolution
"The specified product key was not recognized"Typo or invalid keyRe-enter the key carefully; verify with the vendor
"The product key entered does not match the edition"Key edition ≠ installed editionPurchase a key matching the installed edition, or reinstall the correct edition
"Windows cannot activate right now" / network errorNo internet access or proxy blockingVerify outbound connectivity to Microsoft activation servers (ports 80/443)
"This license is not valid for use on a virtual machine"Retail/OEM key used on a hosted VMPurchase a license explicitly valid for hosted VM use. Contact your provider for the correct license type.

Swipe table horizontally to view all columns.



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