Windows 8.1 Pro Lifetime key – RETAIL


  • Validity: Lifetime – Unlimited reinstall.
  • Support: 32/64 bit Windows 8.1 Pro.
  • Brand: Microsoft
  • Free upgrade to Windows 10 / 11 Pro.
  • Delivery Time: Less than 5 Minutes after the Payment verification.

Best for those who frequently change the Hard Disk / SSD or Format their laptop or desktop. The windows can be activated even after formatting. You can also transfer the license to your new PC.

(7 customer reviews)

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  • 100% Genuine Products
  • Immediate replacement for faulty keys
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Windows 8.1 Pro Lifetime Retail key

  • The Windows 8.1 Pro license key will be sent to your email address immediately within 5 minutes after the payment (Rare cases: up to 8 hours). Please refer to Purchase Process.
  • It will come with official download links and installation instructions.
  • This key will activate Windows 8.1 Pro and it stays activated even after formatting the PC.
  • You will get all official updates and support from Microsoft.
  • Supports all languages and works worldwide. Works for both 32/64-bit Editions.
  • You can Update the PC, Login with your Microsoft account – No restrictions.
  • Supports Free upgrade to Windows 10/11 Pro.



  • You will receive an email containing the activation key.
  • If Windows Operating System is not installed on your PC, please install Windows first and then place an order.
  • This key will work only on Windows 8.1 Pro / Professional Edition. This key will not work on Windows 8.1 Enterprise, N, Education, or any other version.
  • Activate the key within 2 days, because our replacement Period is 2 days.


To find the difference between the following License Types: CLICK HERE




External Links:

Get all the features of the Windows Simplified Desktop, Start menu*, Improved security**, and a suite of tools designed for home and business use.

CLICK HERE to learn more about the product features.

Looking for the Windows 10 Home Lifetime Retail Key! CLICK HERE to Purchase.

Looking for the Latest Windows 11 Pro Lifetime Retail Key! CLICK HERE to Purchase.


Optional: Additional Information for Interested Readers

Windows 8.1 Pro – Seamless work, frictionless management

Windows 8.1 Pro lifetime Key - Seamless work, frictionless managementSave users time with a single login across Windows 8.1 and other Microsoft services. Identity and access management all in the cloud with Azure AD Join.


Windows 8.1 Pro lifetime Key - Manage mobile devices as well as PCs.

Manage mobile devices as well as PCs.

Manage company security policies and business applications on your team’s devices without compromising their privacy through Mobile Device Management (MDM).


Add and manage multiple devices at once

Windows 8.1 Pro lifetime Key - Add and manage multiple devices at onceWith Domain Join & Group Policy you can add new devices to your network and set security policies for many devices at once, all from one management console.


Windows 8.1 Pro – Powerful protection you can trust

Windows 8.1 includes built-in protections for your data, equipment and people, securing business information and personal identities even on lost or stolen devices.


Simple, secure multifactor authentication

Windows 8.1 Pro lifetime Key - Simple, secure multifactor authenticationWindows 8.1 pro offers simple, secure multifactor authentication via phone call, text or the Microsoft Authenticator app for mobile phones and tablets.


Windows 8.1 Pro lifetime Key - Stop data leaks before they happenStop data leaks before they happen

Windows Information Protection  (WIP) prevents accidental data loss by encrypting business data on devices and separating it from personal data.


Hard encryption just got easy

Windows 8.1 Pro lifetime Key - Hard encryption just got easyDevice​ encryption protects your information even on lost or stolen devices. It Provides the same protection for external and removable drives.


Windows 8.1 Pro lifetime Key - Hardware-based defense against start-up attacksHardware-based defense against attacks

Windows Defender System Guard uses the hardware-based root of trust on modern devices to block start-up attacks and prevent them from propagating.


Windows 8.1 Pro lifetime Retail key

Our range of products includes genuine Windows 8.1 keys, licenses, and activations, as well as original Windows 8.1 Pro keys, licenses, and activations. All of our products are authentic and verified, so you can rest assured that you’re getting the best quality software available.

So, if you’re in need of a Windows 8.1 Pro key look no further than our online store. We offer affordable prices, genuine products, and dedicated customer support to ensure that you have a smooth and hassle-free experience with your software activation.

Additional information


Download and Install the Operating System only from Microsoft Website.


Go to PC Settings, select Activate Windows =>Click on Change Product Key / Enter product key => Paste / Enter the Windows 8.1 Pro Key you received => Select Next => Select Activate


This product requires Windows 8.1 Pro installed on your PC. The OS should be downloaded and installed from the Official download link / Microsoft Official Website only.

Technical Support from us

We will provide support if you face any issues while Activating.

Terms and Conditions




7 reviews for Windows 8.1 Pro Lifetime key – RETAIL

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Reviewed by 07 customer(s)

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    Manish Yadav

    Great and fast delivery, worked exactly as expected. I added another laptop and needed another license, the process was painless and quick.

    September 14, 2022
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    Santhosh s

    happy with my purchase

    July 26, 2022
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    Easy ordering, good pricing, fast delivery and excellent service!

    May 4, 2022
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    Sudhakar R

    The support team is very helpful! I received the key right after payment, My key Don’t work, so I wrote them an email, and they responded in minutes with the new key and that worked like charm! Loved the support provided by the Delta Team.

    February 22, 2022
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    Sastharam Ravendran


    November 10, 2021
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    Joseph Padikkala

    This is my 1st purchase from the site and I am happy with the response. Purchased and received key within 5 minutes. No hassle. I will highly recommend this.

    October 21, 2021
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    Dinesh Sahu

    My issue was quickly handled thanks to the swift service, and I appreciate chatting with a live person, not a bot.

    September 8, 2021
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