Buy a Windows 10 Pro license for $15 and Office for $28 on sale at the end of May


This article about discounted Microsoft software is brought to you by Keysbuff.

Keysbuff’s end of May sale gives you the chance to get great deals on software. cult of mac readers will find deep discounts from the software activation key vendor. You can save up to 90% off the total price of Windows 10 and also get great savings on many other Microsoft software.

To grab these great deals, just use the promo code COM on This will save you an additional 25% off the site’s already low prices on keys for Windows 10 Pro Global, Microsoft Office 2021 Pro and others in the list below. You can purchase many of these products with lifetime licenses.

End of May sale: $15 for Windows 10 Pro, $28 for Office

The end of May sale at means great spring deals. You can save big on software, with up to 90% off regular software activation key prices. You can get discounts on Windows, Microsoft Office and more. See offers below.


Microsoft Office

Windows and Office package

If you want to save money on genuine Microsoft software, head over to And don’t forget to enter the promo code COM.

For a limited time only

If you want to take advantage of Keysbuff’s special prices, hurry. These offers – in some cases 90% off the total price – are limited time offers. And the supplies of these software activation keys are also limited.

Also note that the keys sold by Keysbuff are activated on the software downloaded from the official website of the software provider or activated directly on the official website.

How to buy keys and activate new software

The first step to save on Microsoft software is to click on the "Buy now" button on the product page.
The first step to saving on Microsoft software is to click the “buy now” button on the product page.

The process of purchasing and activating Keysbuff is simple and easy to follow. On the purchase page for the software activation key for the product you want, simply click on the Buy now button. So just quickly sign up for your free Keysbuff account (or log in if you’re a regular customer). After completing your purchase, you will receive your software activation link via email.

Once you have placed an order, you will see a confirmation page.
Once you have placed an order, you will see a confirmation page.

After following the link and receiving an OEM product key to the email address you entered during registration, navigate to Windows 10 Settings. Click Begin > Settings > System > About the program > Change product keythen enter your product key.

You will see it once you have completed your order.
You will see it once you have completed your order.

After activating the OEM key, you should see the following message on the activation page: “Windows is activated with a digital license linked to your Microsoft account”.

Installing and activating new software through Microsoft is also a simple process. For example, suppose you want to activate a Microsoft Office package. Just follow these steps:

  1. Go to official Microsoft page for Office software.
  2. Enter your Microsoft credentials (or create a profile if you don’t already have a Microsoft account).
  3. Enter the purchased product key in the appropriate field (from the Keysbuff email you received after your purchase).
  4. After selecting your language and region, click Next to complete the activation.
  5. You can now install Microsoft Office on your PC.
The process of activating your new software is also simple.
The process of activating your new software is simple.

Buy Windows 10 to unlock a free upgrade to Windows 11

Keysbuff offers amazing software at an affordable price. So, let’s say you’re considering building a custom PC. You can buy a Windows 10 software activation key from now and get a free upgrade to Windows 11. Then your new machine will pack with the latest operating system and all its improvements.

Once you have activated Windows 10, you can upgrade to Windows 11 for free. To do this, you need to update your operating system from Windows Update (click Begin > Settings > Update and security > Windows Update). Install all updates offered by Windows until you see the option to update to Windows 11.

If you have any problems before or after purchase, simply contact Keysbuff customer service via email at

What is Keysbuff?

Keysbuff offers a range of software activation keys for productivity software. It also sells games for an array of platforms, including Steam, Origin, Ubisoft Connect, and PlayStation. Additionally, the company sells network cards, gift cards, PC games, expansion packs, and of course, many different software activation keys.

Sponsored by Mediamz.

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Steven L. Nielsen