Windows 8.1 Pro Lifetime key – RETAIL

Original price was: ₹8,700.00.Current price is: ₹1,300.00.

  • Support: 32/64 bit Windows 8.1 Pro.
  • Validity: Lifetime – Unlimited OS reinstall.
  • Brand: Microsoft
  • Delivery Time: Instant delivery after the Payment.

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.

(13 customer reviews)

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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. 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.



  • 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.


Answers to common Questions:

What is the difference between the Single Time Use (STU) and RETAIL Licenses?

In short, two variants are available and both are valid for lifetime.

The Single Time Use (STU) key cannot be used again, after format or change of the Hard drive / SSD that contains the operating system.

Where as the RETAIL key can be used even after formatting or hardware changes like Hard drive / SSD. In case of motherboard failure, you can also transfer your license to another device.

To find more differences between the license visit FAQ'S

Is Windows Retail Key lifetime?

Yes, You can permanently activate the Windows 8.1 pro by using the key purchased from our site.

I have Windows 8.1 Installed, Can I purchase a Windows 8.1 Pro Key and Upgrade my Edition to Windows 8.1 Pro ?

If you have Windows 8.1, you cannot upgrade it to Windows 8.1 Pro using a Windows 8.1 Pro key. You need to perform a fresh installation of Windows 8.1 Pro.

If you would like to activate your Windows 8.1 with a key, please contact us. We may be able to provide you with a key.


Looking for Windows Applications like MS Office 2016 Pro Plus Lifetime key – 5 PC License , MS Office 2019 Pro Plus Lifetime key – 5 PC License , Microsoft Project 2019 Professional Lifetime key – Account Bind , Microsoft Visio 2019 Professional Lifetime key – Account Bind


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 download the ISO file.

To know more about Windows 8.1, CLICK HERE


Optional: Additional Information for Interested Readers

Windows 8.1 Pro lifetime Retail Key - Requirements

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

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.

Windows 8.1 Pro lifetime Retail Key - Hard encryption just got easySo, 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


This product requires Windows 8.1 Pro installed on your PC. If the OS is not Installed, download and Install the Operating System from Microsoft Website. If the OS is not Installed, download and Install the Operating System from Microsoft Website. At the time of installing the OS, Paste / Enter the Windows 8.1 Pro Key you received.


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

13 reviews for Windows 8.1 Pro Lifetime key – RETAIL

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Reviewed by 13 customer(s)

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    Fully satisfied with the product and this website services. Looking forward to purchase some more items in future.

    September 21, 2023
    Verified Review
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    I’ve purchased Windows 8.1 and ms office 2016 licenses from Delta Keys and they were fantastic. The key was available as soon as I paid, and they sent an email with the key immediately.

    April 25, 2023
    Verified Review
  • Avatarrx-user-avatar rx-user-avatar-70 alignnone photo

    Tejasvi Yadav

    There was some initial confusion on which variant product to purchase for my needs, but after some research, I identified that the Retail key is best one for me. The purchase and activation process on Delta Keys’ website was a breeze.

    March 17, 2023
    Verified Review
  • Avatar

    vijay sequeira

    I recently bought a refurbished desktop that didn’t have Windows activated, which is a necessity for me. After some Google searching and price comparisons, I found this product on Delta Keys’ website. It was much less expensive than I expected. Highly recommend! 🙂

    February 23, 2023
    Verified Review
  • Avatar


    The price was cheap and I received the notification to download the software just moments after payment. The download and install were flawless. Thank you for the great service!

    December 14, 2022
    Verified Review
  • Avatarrx-user-avatar rx-user-avatar-70 alignnone photo

    Hariom singh

    Ordering my Microsoft windows 8.1 license was a breeze. The key was emailed to me right away, along with a link to download the program. I couldn’t have asked for a simpler process – great purchase!

    October 9, 2022
    Verified Review
  • Avatar

    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
    Verified Review
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    Santhosh s

    happy with my purchase

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

    May 4, 2022
    Verified Review
  • Avatar

    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
    Verified Review