Office 2021 Professional Plus - Product Key

Mr Key Shop is a Microsoft Certified Partner

Purchase an Office 2021 Professional Plus license from Mr Key Shop at a very competitive price. The licenses are 100% original, the payment methods are secure, and there is a money-back guarantee. Delivery takes place within seconds via email, and we offer free support.

Purchase an Office 2021 Professional Plus license at Mr Key Shop and maximize your productivity

You can now purchase your Microsoft Office 2021 Professional Plus license at Mr Key Shop! Despite the release of more recent versions , Professional Plus 2021 remains the most comprehensive suite and is loved by businesses and power users who want maximum local control without the need for cloud-first features or recurring subscriptions. It is designed to handle complex workloads, large databases, and centralized business communications.  Office 2021 Professional Plus is the ideal edition if you want to upgrade to Windows 11 Pro or if you want to perform a clean installation with a Windows 11 Pro Key. Check out our catalog and save! 

Why activate an Office 2021 Pro Plus license

Here's why activating your original Office 2021 Pro Plus product key today is an essential step.

1. Unlock the Full Arsenal (Including Access and Publisher)

Many users are unaware that only the Professional Plus version includes the full software package. Without activation, the apps enter “Read-Only” mode.

• Access 2021: essential for those who manage complex local databases without cloud subscription costs.
• Publisher 2021: Office 2021 is the last version to include Publisher, as Microsoft has removed this app from versions 2024 and later. If you create marketing materials, this license is your last chance to get it.

2. Security and Business Continuity in 2026

Activating an original license means protecting your daily work.

• Security Patches: Office 2021 receives critical security updates until October 13, 2026. Activating your license ensures that your PC is protected from malicious macros and newly discovered vulnerabilities.
• Goodbye to Pop-ups: activation permanently eliminates service interruption alerts and red “Product Not Activated” bars, which can block Excel macros and printing functions.

3. Legal and Tax Compliance for VAT Numbers

Software compliance checks are becoming increasingly stringent.

• Software Audit: having an active license with a regular invoice from Mr Key Shop protects you from penalties during any checks.
• Tax Deduction: As it is an instrumental asset, the cost of the license is fully deductible, making the investment even more advantageous.

The 8 Applications of Office 2021 Professional Plus

Key Features of Office 2021 Professional Plus Packages

Office 2021 Professional Plus continues to be the most popular suite for businesses and professionals who need total control over their data and specialized tools that the “Home” versions do not offer.

1. Full Application Package

Unlike the Home & Business versions, Professional Plus is the only one to include Microsoft Access and Microsoft Publisher.

• Access 2021: allows you to create and manage complex databases locally, without cloud subscription costs.
• Publisher 2021: the ideal tool for laying out professional marketing materials such as brochures and catalogs.

2. Real-time co-authoring

Although it is a perpetual license (not a subscription), Office 2021 introduces simultaneous collaboration.

• Features: You can work on the same Word or Excel document together with your colleagues, seeing changes in real time, as long as the file is saved on OneDrive.

3. Excel 2021: Advanced Analysis Features

Excel has received its most significant update with the introduction of features that were previously exclusive to Microsoft 365.

• XLOOKUP (CERCA.X): replaces the old CERCA.VERT, making data search easier and more powerful.
• Dynamic Arrays: new formulas that allow you to manage entire data sequences with a single instruction, speeding up financial and statistical calculations.

4. Dark Mode and Graphics Performance

The interface has been redesigned for Windows 11, but also offers great benefits on Windows 10.

• Advanced Dark Mode: Word now offers a full “Dark Mode,” which also includes the page background, drastically reducing eye strain during nighttime work sessions.
• SVG Support: In PowerPoint, you can insert vector images (SVG) and manipulate them without loss of quality, creating presentations with superior visual impact.

Uncompromising productivity: the professional ecosystem for Office 2021 Professional Plus packages

To ensure that Office 2021 Professional Plus operates in a smooth and secure environment, it is essential to integrate software solutions that enhance its operational capabilities and security. In an increasingly complex digital landscape, protecting your workstation with a Norton 360 Standard subscription represents the first essential step in safeguarding Access databases and Outlook communications from external threats. Document management also finds its ideal complement in the integration of a Nitro 10 PDF lifetime license, allowing you to convert and edit PDF files with the same precision guaranteed by Word.

For the architecture and engineering sectors, the Office 2021 suite integrates perfectly into technical workflows: pairing it with a AutoCAD LT commercial license or the Revit software allows you to move from BIM modeling to Excel reporting without system slowdowns. Finally, for those who want to enhance the visual impact of their corporate presentations, using Canva Pro provides an endless catalog of graphic assets ready to be imported into PowerPoint, ensuring modern and professional communication in every area of your business. It is highly recommended to install a antivirus for Windows (10 or 11) or Mac that you trust to protect your devices, and to make sure you perform a full backup before installing any new software. You can use backup and restore for Windows 10 software. Taking these precautions can help prevent data loss and keep your devices safe from cybersecurity risks. 

Why buy the Office 2021 Professional Plus product key from Mr Key Shop?

Choosing Mr Key Shop not only means saving money, but also securing a reliable partner who will protect your software investment over time. Here are the main reasons why thousands of users choose our platform:

1. Financial and tax savings

You can get the complete suite with discounts of up to 70% off the original list prices. In addition, for each purchase, Mr Key Shop issues a regular tax invoice (required for VAT numbers and companies), allowing you to deduct the entire cost as an operating expense.

2. Immediate Digital Delivery

Forget about waiting for couriers. A few seconds after payment, you will receive an email:

• The original and unique Product Key.
• The official link to download the software from Microsoft servers.
• Detailed step-by-step installation guide.

3. Perpetual and Transferable License

The licenses provided by Mr Key Shop are Retail. Unlike OEM licenses tied to a single PC, the Professional Plus 2021 license purchased from us is yours forever. If you change computers in the future, you can deactivate it from your old device and reinstall it on your new one, protecting your investment.

4. Certified Security and Trusted Shops Guarantee

We are one of the few digital stores to offer Trusted Shops protection, which allows you to insure your order for up to €2,500

• Free technical support in Italian and English

If you have any questions during activation or installation, you will never be alone. Our team of experts is available free of charge to guide you, ensuring that your suite is 100% operational in just a few minutes.

What do I get when I purchase an Office 2021 Professional Plus key from Mr Key Shop?

• Your 100% official Office 2024 Professional Plus product key 
• Complete setup instructions
• Official links
• Invoice
• Access to free technical support in Italian and English