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Microsoft Windows — Windows 11, 10 and Pro buying guide

For self-builders, IT teams and home upgraders looking for a genuine Windows 11 Pro or Windows 10 product key.

4 products3 guides9 answersUpdated Jul 2026Shop the full range

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Your Windows 10 Home product key is delivered by email after your order is verified — typically the same business day. The email includes the activation key, the official Microsoft download link, and step-by-step activation instructions. There is no physical shipping — everything is digital and reaches the email address you provided at checkout.

Yes. Maventech only sells genuine, activation-ready Microsoft license keys sourced through legitimate volume-licensing channels. The key you receive activates the official Microsoft software downloaded directly from the Microsoft website — it is never a cracked, repackaged, or modified installer. Every key is verified before dispatch and backed by our 30-day money-back guarantee if it fails to activate.

In the rare case a key does not activate, contact our support team within 30 days and we will either provide a working replacement key at no extra cost or issue a full refund — your choice. Support is available via live chat on the site, email, or phone (Mon-Sat, 9 AM - 6 PM EST). Most activation issues are resolved in under 10 minutes by our concierge team.

1. Visit account.microsoft.com to download the official installer. 2. Sign in with (or create) your Microsoft account. 3. Enter the license key shown above when prompted and follow the on-screen activation steps. For Windows, you can also activate via Settings → System → Activation → Change product key. If you would prefer we do it for you, our ProAssist Premium Installation add-on books a specialist to set everything up over a 30-minute video call.

Each license key activates one device under the Microsoft end-user license agreement. For multi-device coverage, pick a multi-seat product (e.g. 3-device or 5-device variants when available) or buy additional keys with the volume discount applied automatically at checkout for 5+ units.

Yes. The 25-character key you receive is a genuine Microsoft activation code that pairs with the official Windows 10 installer downloaded from microsoft.com/software-download. It is never an MAK, KMS or modified ISO. Activation completes inside Settings › System › Activation › Change product key, and the licence is tied to your hardware so it survives clean installs and Windows updates.

Yes. The key activates fresh installs on new PC builds and clean reinstalls on refurbished or second-hand machines. Boot from the official Microsoft Media Creation Tool USB, install Windows 10, skip the “I don't have a key” prompt and paste your code in Settings after install.

Yes. Run the official Windows 10 Media Creation Tool, choose "Upgrade this PC now", and Windows performs an in-place upgrade preserving your apps and files. When prompted, paste the 25-character code in Settings › Activation › Change product key to activate the new licence.

Your Windows 11 Home product key is delivered by email after your order is verified — typically the same business day. The email includes the activation key, the official Microsoft download link, and step-by-step activation instructions. There is no physical shipping — everything is digital and reaches the email address you provided at checkout.