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Office 2021 Professional Plus Key: How to Buy, Save and Activate

The best deal on Office 2021 Professional Plus lifetime license keys
Last Updated on November 5, 2024
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Office 2021 Professional Plus remains one of the most sought-after suites for productivity software, whether you be an office worker or self-employed professional, but it doesn’t come cheap. Downloading an Office 2021 Professional Plus key from the right online retailer can however save you a bundle of cash, and bring you peace of mind that your software is legitimate.

Why buy Office 2021 Professional Plus? 

Buying a legitimate copy of Microsoft Office at a good price is the better call as you can rest easy knowing that you will be able to enjoy free future updates and security patches, so have zero compatibility issues when it matters most and you’re sending files to colleagues and clients, plus less risk to your data.


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In terms of why you should buy Microsoft Office 2021 Professional Plus over the standard Microsoft Office, the former includes Microsoft Access along with Microsoft Teams or Skype for Business, depending on the edition you buy. Access is perfect for database management and either of the video calling software apps are obviously very useful for virtually every job in the present day world of work. It also has additional tools within the standard programs like enhanced data collection and better email archiving in Microsoft Outlook.

Best Office 2021 Professional Plus Product Key Deals

The main retailer we recommend if you’re looking to pick up a copy of Office 2021 Professional Plus is Mr Key Shop: they are a trusted software license reseller where you can also find great prices.

At the time of writing, the MSRP of Office 2021 Professional Plus is £499.99 but you can now pick it up for £94.99, which is a huge saving of 81%!!!

Buy Office 2021 Professional Plus Key

Where to buy Microsoft Office 2021 Professional Plus

Mr Key Shop is a great choice not just for deals Office 2021 Professional Plus, but also on a Windows 11 Key, Windows 10 Pro Key and previous versions of the operating system, great security tools like Bitdefender Antivirus and the best Backup Software. You can also find great deals on Windows Server, buy AutoCAD at unparalleled prices, other than your brand new Microsoft Office 2021 Key. Furthermore, you will save significantly on the best Antivirus for Android and even legacy software, like Office 2016 product keys (ideal for older and slower machines) and even Microsoft Office for Mac. Interested in single Office apps? You can buy Word on sale and all the other popular tools. Discounts are available all year round, and not just for special events like Black Friday.

The site has an ‘Excellent’ rating on Trustpilot. Furthermore, the company earned the Trusted Shops certification, which lets customers request a further guarantee including refunds up to 2,500 euros per order, adding to the standard 100% refund warranty covering all products in the catalog. You can read more about it here.

Buy office 2021 professional plus product key

Mr Key Shop is also very customer-friendly, always ensuring a smooth and safe shopping experience, with SSL protection and the best payment providers in the market like PayPal and Stripe. Each purchase comes with a handy guide on how to download, install and activate your product (i.e. how to activate Windows 11) and official and clean links to get your installers. By following the step-by-step guidance, for example, you can download Microsoft Office for free whenever you need it, like when you need to format your device and get a fresh install of everything, so you won’t need to purchase a new instance. And, in any case of doubt or issues, the company provides free, English-speaking customer support.

In short, this is the place to go if you’re looking for the best Microsoft Office Deals!

What Does Microsoft Office 2021 Professional Plus Include?

The following is the list of applications you get with Microsoft Office 2021 Professional Plus, and the most recent improvements when compared to the preceding Office 2019. The beauty of getting this lifetime license is that you get continuing updates with the same innovative features introduced in Office 365, such as the integration with Python, introduced to Excel in 2023. Furthermore, this version is the ideal companion to Windows 11 Pro. (By the way, do you want to save even more on your OS? Buy a Windows 10 Pro key instead, and then upgrade to Win 11 Pro for free!).

Here is what you get with Office 2021 Professional Plus:

  • Word 2021: The latest version of the classic word-processing software has improved stability and speed compared to older variants, plus new features like co-authoring, smart citations, AI-powered grammar checks, new data analysis options, dark mode, Line Focus, and support for ODF 1.3.
  • Excel 2021: This iteration of the preeminent spreadsheet software has co-authoring with a shared comments system, new functions including XLOOKUP, XMATCH, LET, Dynamic arrays, improved data visualization tools, faster calculation speeds, plus ODF 1.3 file support. One of the most exciting new features that it shares with Office 365 is the native integration of Python programming language, which you can use to create pivot tables, charts, and more.
  • OneNote 2021: OneNote is a fairly freeform note-taking application that also lets tablet users sketch with a stylus. Recent updates to the software include the ‘OneNote Notes feed’ which combines all recent Sticky Notes/Samsung Notes/OneNote pages into one chronological feed.
  • PowerPoint 2021: The grandaddy of presentation software, newer features include hex color input, improved element arranging, slide linking, and integrated Microsoft Search and Record Slide Show function, plus Replay/Rewind for in-strokes, ODF 1.3 support and an improved Draw tab.
  • Outlook 2021: The latest version of the classic email app has improved inbox organization, better security features, a translator function, the new ‘Ink’ feature which lets you draw on and annotate emails, improved search functionality, T-hex color input, and more.
  • Access 2021: This database management system now requires fewer clicks to manage your tables, plus has improvements to various windows, including the Relationship Window, Query Designer, Linked Table Manager, and SQL View. There’s also a new DateTime data type (DateTime2), along with hex color input.
  • Publisher 2021: The classic publishing software with a focus on page layout and formatting will be discontinued after 2026. You’ll still be able to use the software but it will no longer be updated by Microsoft. If you’re a fan of it then this could be the last opportunity for you to pick up your copy!
  • Teams 2021: The online video conferencing software is now integrated into numerous other Microsoft applications, making it a more comprehensive online collaboration tool with its own file storage capabilities.

Office Professional Plus 2021 System Requirements

The system requirements for Microsoft Office Professional Plus 2021 are as follows:

  • Processor: 1.1 GHz or faster, 2-core
  • Memory: 4GB RAM
  • Hard Disk: 4GB of available disk space
  • Display: 1280 x 768 screen resolution (64-bit Office required for 4K and higher)
  • Graphics: Windows OS: Graphics hardware acceleration requires DirectX 9 or later, with WDDM 2.0 or higher for Windows 10 (or WDDM 1.3 or higher for Windows 10 Fall Creators Update).
  • Operating System: Windows 11, Windows 10, Windows 10 LTSC 2021, Windows 10 LTSC 2019, Windows Server 2022, or Windows Server 2019.
  • Internet Connection: Internet functionality requires an internet connection.
  • Browser: The current version of Microsoft Edge, Internet Explorer, Safari, Chrome, or Firefox.
  • .NET version: Some features may require .NET 3.5 or 4.6 and higher to also be installed.

MS Office 2021 Professional Plus Download

Downloading MS Office 2021 Professional Plus from Mr Key Shop is perfectly straightforward. Shortly after you have completed your purchase you should get an email with a link to download the ISO setup file. Once this has been downloaded you can begin the installation.

microsoft office 2021 professional plus download

Install Office Pro Plus 2021

The installation process is very easy. Either double-click the downloaded file to open/run it, or if you’re accessing it via a browser, select ‘Run’ from the options available (in Internet Explorer/Microsoft Edge), ‘Setup’ (in Chrome), or ‘Save File’ (in Firefox). When the installation Wizard asks you if you want to allow the app to make changes to your device, say ‘Yes’, and then wait until it’s completed!

Install ms office 2021 professional plus

How to activate Office 2021 Pro Plus

To activate Office 2021 Pro Plus on Windows – if you’ve already downloaded and installed the software – all you have to do is start one of the applications included in the suite and you’ll be asked to insert your product key. As an additional method, you can also follow the below steps to achieve activation:

1. Within an Office 2021 Pro Plus application, click on File in the top left corner.

activate microsoft office 2021 pro plus

2. Select Account from the bottom of the menu on the left then Activate Product on the right.

office 2021 professional plus lifetime license key

3. Click Use a different account.

4. Click I have a product key then enter your activation key and follow the steps of the wizard.

microsoft office professional plus 2021 product key

This way, you will have your legit installation with a Microsoft Office 2021 Lifetime License.

Office 2021 Pro Plus lifetime license VS Microsoft 365 subscription: Which to choose?

With an Office 2021 Pro Plus lifetime license you only need to pay once and you have yourself a lifetime subscription. With Microsoft 365 you’ll either have to sign up to a one month or one year subscription, which (if you’re paying full price for both) means a smaller initial payment that may appeal to some, however, you’re locked in for continuing payments to continue using the product. If you pick up an Office 2021 Pro Plus lifetime license deal from Mr Key Shop however, then the asking price is so low it makes no sense to go for the 365 subscription option, particularly as both products receive updates from Microsoft. If you are looking for something more focused on home users, take a look at Office 2021 Home & Business instead, especially if you don’t need all the bells and whistles specific to enterprise users. Whichever your choice is, always check for the best Microsoft Office Deals, so that you won’t miss any saving opportunity, now and in the future.

Aaron's laptop knowledge makes him the go-to guy on PC Guide. But he still finds time for features, deals and much more.