Summer is the most colorful time of year, with blue skies, beach balls and a million flavors of ice cream. But it also brings some of the best deals on Microsoft software. You need to update yours to keep it working smoothly — not to mention safe from the latest security threats. Luckily, you can score the latest versions of Windows, Microsoft Office and other great software at super-low summer prices.
Summer Sale: Get up to 90% off Microsoft Windows, Office and more
If you want the best deals that CdkeySales offers on Windows, Office, development software and games, hit the links below. You’ll find it’s simple to buy a software key that you can instantly activate on Microsoft’s site. See the simple steps below.
As a trusted vendor, CdkeySales sells keys that enable you to activate software downloaded from the official software provider’s website, or activate it directly on the official website. You’ll always see substantial savings — up to 90% off the retail prices.
Unless otherwise noted, all deals are for lifetime keys (although they will only work on one device). Global keys will work anywhere, with no georestrictions.
Get deals on Microsoft Windows (Pro and Home versions)
CdkeySales’ deals on Windows 10, Windows 10 Pro and Windows 11 are ideal for you if you’re running an older version of Microsoft’s operating system. Updating to at least Windows 10 is important not just to get the software’s new, powerful features, but because Microsoft eventually stops supporting Windows versions. For example, Microsoft stopped offering technical support and software updates for Windows 8.1 on January 10, 2023.
As a bonus, after you buy and install Windows 10, you can upgrade to Windows 11 for free. To do this, you must update your operating system from Windows Update (click on Start > Settings > Update and security > Windows Update). Install all the updates that Windows offers until you see the option to update to Windows 11.
- Windows 10 Pro (global key): $16.39 (30% off code CULT)
- Windows 10 Home (global key): $13.47 (30% off code CULT)
- Windows 11 Pro (global key): $21.96 (30% off code CULT)
- Windows 11 Home (global key): $21.10 (30% off code CULT)
See savings on Microsoft Office versions
Almost everyone who’s ever worked on a computer is familiar with Microsoft Office and the various programs that come in the world’s most popular software suite.
If you need the software, why pay more? These Microsoft Office deals are hard to beat.
- Microsoft Office 2021 Professional Plus (global key): $52.23 (30% off code CULT)
- Microsoft Office 2019 Professional Plus (global key): $45.35 (30% off code CULT)
- Microsoft Office 2016 Professional Plus (global key): $27.35 (30% off code CULT)
- Microsoft Office 365 (global key good for one-year subscription on one device): $20.07 (30% off code CULT)
Save a bunch with Windows and MS Office bundles
If you happen to need both Windows and Microsoft Office, you can save even more with CdkeySales’ bundles:
- Windows 10 Pro + Office 2016 Professional Plus keys: $39.96 (30% off code CULT)
- Windows 10 Pro + Office 2019 Professional Plus keys: $57.49 (30% off code CULT)
Microsoft Visual Studio and SQL Server
CdkeySales doesn’t just sell the most widely used Microsoft software, either. if you need Microsoft’s development or server software, these deals should appeal:
- Microsoft Visual Studio 2022 Enterprise (global key): $92.36 (30% off code CULT)
- Microsoft SQL Server 2019 Standard (two-core global key): $84.67 (30% off code CULT)
Step-by-step: Buying and activating Microsoft software keys

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If you’ve never bought software activation keys before, don’t worry. We’ll walk you through the process. We promise it’s simple and straightforward.
First, go to CdkeySales.com. On the software activation key purchase page for the product you want, just click the Buy Now button. (What could be simpler, right?)
Then just sign up quickly for your free CdkeySales account (or log in if you’re a repeat customer). After you complete your purchase, you will receive your software activation link via email.

Photo: CdkeySales.com
Next, click on the link in the email you received to get your OEM product key. Then go to Windows 10 Settings. Just click Start > Settings > System > About the program > Change product key, and enter your new product key.
After you activate 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.”
Install and activate your new software

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Installing and activating new software via Microsoft is also a straightforward process. For example, let’s say you want to activate a Microsoft Office package. Just follow these steps:
- Go to the official Microsoft page for the Office software.
- Enter your Microsoft credentials (or create a profile if you do not already have a Microsoft account).
- Enter the purchased product key in the appropriate field (from the CdkeySales email you received after your purchase).
- After selecting your language and region, click Next to complete the activation.
- Now you can install Microsoft Office on your PC.
What is CdkeySales.com?
CdkeySales.com also offers a range of software activation keys for games on an array of platforms, including Steam, Origin and Ubisoft Connect. Plus, the company sells hardware, network cards, gift cards, PC games and expansion packs.
If you encounter any problems before or after purchase, just contact CdkeySales.com’s customer service department via email at [email protected] for a quick response.
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