Microsoft Windows 8.1 Pro

Microsoft Windows 8.1 Pro
Genuine licence Email in ø 43s
−48% off MSRP
Microsoft

Microsoft Windows 8.1 Pro

Genuine Windows 8.1 Pro key with BitLocker, Hyper-V, domain join and instant email delivery.

$18.90$35.9048%incl. VAT

Lowest price in the last 30 days: $35.90 (on 3/6/2026)

1
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Secure checkout · Stripe / SEPA / iDEAL
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Why choose us

In your inbox in under 60 seconds

Licence key + activation guide for your OS language. PDF VAT invoice attached.

Verified before delivery

Every key is checked against the publisher’s activation servers before we send it.

What if I have trouble activating?

Email or chat support replies in your language within an hour during EU business hours. We’ll walk you through it or replace the key.

Stripe-secured checkout · 3-D Secure EU VAT invoice · reverse-charge for B2B Activate from any of 27 EU states 14-day refund · no fees, no questions

About this licence

Microsoft Windows 8.1 Pro is a practical choice for PCs that need the Windows 8.1 environment, including older hardware, touch devices from the Windows 8 era, and systems running software that was built or tested for this version. It keeps the familiar desktop close at hand while adding the Start screen, live tiles and improved app snapping for a more flexible setup.

With the Pro edition, you get the features needed for more advanced home, work and testing use. That includes domain join and Group Policy support for managed networks, BitLocker full-disk encryption, Hyper-V for running virtual machines, and Windows To Go for booting a Windows workspace from a USB drive. It is also suitable for compatibility testing where Windows 8.1 behaviour needs to be checked directly rather than assumed.

After checkout, Lizensa sends your Windows 8.1 Pro product key by email, with digital delivery averaging around 43 seconds. You can download the official installation ISO from your lizensa.com account, create a USB or DVD installer, install Windows, and activate it using the supplied key. The licence is permanent, with no subscription or recurring payment.

Lizensa supplies genuine Microsoft software through authorised European distribution channels. For EU buyers, the order includes clear consumer protections: a 14-day refund period under EU consumer law, GDPR-compliant handling of your data, and an EU VAT invoice for your records. Resale of software licences in the EU is legally supported under the exhaustion of rights principle confirmed by the Court of Justice of the European Union in case C-128/11.

What you get

  • Retail-type licence key (see product page for licence type)
  • Lifetime activation · tied to your account
  • EU VAT invoice · B2B reverse-charge supported
  • Email delivery in under a minute (ø 43s)
  • Multilingual activation guide (EN/DE/FR/ES/NL/PL/IT/PT)
  • 14-day refund under EU consumer law

Specifications

Operating system
Windows
Version
Latest
SKU
WIN-81-PRO
Licence
Perpetual / lifetime
Architecture
x64
Languages
en, de, fr, es, it, nl, pl, pt, ja
Activations
1 device

From order to activation

  1. 01

    Order received

    Stripe / SEPA / iDEAL / Bancontact — every major EU payment method accepted.

  2. 02

    Key verified

    We check your licence against the publisher’s activation servers in real time.

  3. 03

    Email delivered

    Licence + activation guide arrive in under 60 seconds. Average 43 seconds.

  4. 04

    You activate

    Follow the guide in your language. Done in under 2 minutes.

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Common questions

Is this licence lawfully resold in the EU?
Yes. Sourced through authorized European distribution channels. Every key is genuine and resaleable under EU “exhaustion of rights” (CJEU C-128/11).
How fast does the key arrive?
Average delivery is 43 seconds. We commit to under 60 seconds. If we miss that, you get a free replacement.
Can I get a refund if it doesn’t work for me?
Yes. EU consumer law gives you 14 days to return any unused key — no fees, no questions. Honoured without friction.
Do you provide a VAT invoice for B2B?
Yes. EU-compliant invoice with every order, downloadable from your dashboard. Valid VAT number triggers automatic reverse-charge.
What languages is the activation guide in?
EN, DE, FR, ES, NL, PL, IT, PT — matched automatically to your account locale.
What if I have trouble activating?
Email or chat support replies in your language within an hour during EU business hours. We’ll walk you through it or replace the key.
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$18.90$35.9030d low: $35.90