How do I verify a Microsoft license is genuine?
Last reviewed by the MSLicenseHub Licensing Desk.
Three checks. First, where you bought it — Microsoft Store, an authorized CSP partner, or a Volume Licensing reseller listed in the Microsoft partner directory. Anything else, including "deeply discounted" keys on marketplaces, is suspect.
Second, activation behavior. A genuine key activates on the first attempt and shows "Windows is activated with a digital license" (or "with a digital license linked to your Microsoft account") in Settings → Activation. A grey-market key may activate once and fail re-activation after a reinstall.
Third, the Microsoft 365 admin center for Microsoft 365 / Volume Licensing — your subscription should appear in the tenant's Billing → Licenses page. If it does not, you do not have a real subscription.
Apply this to your deployment
- Use rights
- Activation method
- Purchase evidence
Activation is a technical check, not proof of ownership. Match the activation method to the purchasing channel and agreement, and retain the invoice and entitlement records.
Decision checklist
| Check | What to record |
|---|---|
| Product and version | Record the full name, edition, version and part number in the quote. |
| Scope of use | Identify the user, device or deployment; count only the metric applicable to this product. |
| Evidence and support | Retain the agreement, invoice and support lifecycle date; perpetual licensing does not mean perpetual support. |
Official Microsoft terms and licensing guidance · Product support lifecycle
Practical checklist
- Keep the invoice, the licence agreement or Volume Licensing confirmation that names the product, edition and quantity.
- In Windows, check activation under Settings › System › Activation; in Office, check File › Account.
- For business purchases, licences should appear in the Microsoft 365 admin center or with your CSP partner.
- Very cheap ‘lifetime’ keys from marketplaces are a strong warning sign.
Common mistakes to avoid
- Treating successful activation as proof of ownership.
- Buying separate OEM keys — OEM is only supplied with new hardware.
- Losing proof of purchase needed during an audit.
Official source: Microsoft documentation. Licensing terms change; confirm against the current Product Terms before buying.
Still unsure?
Talk to a licensing specialist for a written, signed quote tailored to your environment.
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