Operating Systems

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Buy Microsoft Operating Systems from Mr Key Shop at very competitive prices. 100% genuine digital licenses, tracked and secure payments with a full money-back warranty. Instant digital delivery after purchase, with free English-speaking Customer Service.

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Buy Windows Operating Systems

Mr Key Shop offers the best Microsoft Windows Operating Systems for all your needs and at very competitive price points. Order your new Windows OS and save, with instant inbox delivery. Mr Key Shop’s catalog is complete with the most popular Windows editions. If you have an older PC, buy and download Windows 7 or Windows 8.1, both are excellent OSs if your machine is not too up-to-date.

Speaking of more modern Microsoft Operating Systems, we also offer Windows 10, one of the best Microsoft Products ever, with an overhauled UI and advanced features for multi-device operation, even for touch screens, like 2-in-1s. Only Windows 10 allows you to upgrade to Windows 11 for free! Our catalog also includes this new Microsoft Operating System. Purchase Windows 10 OS and save twice: you’ll pay way less than the MSRP and you can upgrade to Microsoft Windows 11 spending zero! Furthermore, Windows 10 is specifically designed to get the most ouf ot Microsoft Office 2019, one of the best productivity suites from Microsoft.

If you need the latest OS, Microsoft Windows 11 is already available from Mr Key Shop! Buy your Home or Professional license and if you match your order with Microsoft Office 2021, you’ll be able to get the most out of both software and save money! Hardware optimization, security and collaboration, as well as co-authoring and native Android app support (with a later update) are just some reasons to go and buy Windows 11 from Mr Key Shop! We always recommend protecting your devices by also installing a valid and effective Antivirus against cyber attacks. 

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Download Windows Operating Systems

Buy and download Windows Operating Systems from Mr Key Shop: this is how you will save on the price list, and, above all, receive your 100% genuine and guaranteed product key within a few seconds from your purchase, with an official ISO download link and full instructions on how to install Windows quickly and easily. Mr Key Shop only offers secure and tracked payment methods, with a full money-back warranty: at the end of your transaction, you’ll receive everything you need in your inbox. You’ll be able to download and install Windows with no external help. Enjoy your new OS in a breeze!

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Install Windows operating systems with digital licenses

With Digital Delivery we can offer our professional service, together with cheap prices from our 100% authorized store. We can also help save the environment: by sending your order to your inbox, we can reduce the impact of physical good transport systems, lowering the related emissions and waste. Together, we can make the world greener because we are an Eco-Friendly Company!

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Microsoft Office Suites are also available on Mr Key Shop.

Office 2021 is the latest and most updated Microsoft Office Suite, compatible only with the Windows 10 and Windows 11 Operating Systems. Find out more about Microsoft Office 2021.
Also available: Office 2019 - Office 2016 - Office 2013 - Office 2010 is also available Microsoft Office for MAC.

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Are you a reseller?

If you’re a reseller, mail us at sales@mrkeyshop.com and we’ll send you a custom-made price list. Let’s work together!

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The licenses for Windows Operating Systems are perpetual. What does it mean?

Mr Key Shop’s catalog only includes perpetual licenses for Windows Operating Systems. Such licenses are bound to a Microsoft Account and not a given machine. Whenever you need to format your PC or replace something in your hardware, just reuse your product key. You’ll deactivate the previous license and will be able to reuse it to install your Windows OS again without buying a new product key.

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When I buy a new Windows Operating System, what will I get?

Buy Microsoft Windows from Mr Key Shop and you’ll save on the price list and, most importantly, you’ll receive your order in your inbox within a few seconds from purchase. Check your email, we’ll send you the following:

- Your Windows Operating System (1 user license)

- Official Windows ISO download link

- Clear and complete instructions on how to download, install and activate Windows

- Free English-speaking Customer Service

- Invoice

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System Requirements

See each version of Microsoft Windows to see the minimum requirements.