Microsoft Office 2021 Pro Plus Key (5-50 PC)

What is included in Microsoft Office 2021 Professional Plus?

Word 2021 – Document creation with modern templates and co-authoring.
Excel 2021 – Dynamic arrays, XLOOKUP, LET and XMATCH functions.
PowerPoint 2021 – Improved Record Slide Show and sketched style outlines.
Outlook 2021 – Email, calendar and contacts with on-the-fly translation.
Access and Publisher – Desktop database management and print layout design.
Important – Microsoft Teams and Microsoft 365 cloud services are not bundled in this edition.

What are the main benefits of Microsoft Office 2021 Professional Plus?

Office 2021 Professional Plus is the classic, one-time purchase desktop suite for Windows PCs, covering Word, Excel, PowerPoint, Outlook, Access and Publisher. It is the most complete perpetual Office 2021 edition for users who do not want a Microsoft 365 subscription.

One-time purchase – Pay once, no recurring monthly billing.
Full desktop apps – Apps run locally after activation, offline.
Modern Excel functions – XLOOKUP and dynamic arrays speed up lookup work.
Access database – Build local databases with the Linked Table Manager.
Publisher layout – Print-ready brochures, flyers and newsletters on Windows.
Offline operation – Daily work needs no internet connection after install.

Microsoft Office - Full Comparison of all Versions from 2010 to 2024
Overview of which programmes are included in each Office edition from 2010 to 2024.

What does Microsoft Office 2021 Professional Plus do?

It installs the full classic desktop Office suite on a Windows PC for document, spreadsheet, presentation, email, database and publishing work. The Professional Plus edition adds Access and Publisher on top of Word, Excel, PowerPoint and Outlook, which the Home & Business edition does not include. Excel 2021 introduces XLOOKUP, LET, XMATCH and dynamic array functions such as FILTER, SORT and UNIQUE, which replace older nested INDEX/MATCH constructions and array-formula workarounds. After activation, all apps run locally and do not require an internet connection for everyday use.

Who is Microsoft Office 2021 Professional Plus best suited for?

It suits Windows users who need Access for local databases or Publisher for print layouts and do not want a Microsoft 365 subscription. A typical case is a small accounting practice that keeps client records in an Access database while preparing invoices in Word and tax sheets in Excel, where a perpetual license avoids monthly billing affecting the operating cost. It also fits Windows-only workplaces where the IT team prefers a stable feature set without forced cloud feature changes. Mac users should choose a different edition because Access and Publisher do not exist for macOS.

How does Office 2021 Professional Plus compare to other Office 2021 editions?

Professional Plus is the most complete Office 2021 edition for Windows and is the only one that historically bundled Microsoft Teams. Home & Student includes only Word, Excel, PowerPoint and OneNote. Home & Business adds Outlook on top of those. Professional adds Publisher and Access for Windows. Professional Plus matches Professional and adds Teams in its original packaging, although Teams is now obtained as a separate download due to Microsoft's global unbundling that took effect on April 1, 2024.

Office versions from 2010 to 2024 without subscription
Comparison of perpetual Office releases to help you pick the right one for your system and budget.

How does Office 2021 Professional Plus compare to Microsoft 365?

Office 2021 Professional Plus is a one-time purchase that keeps the feature set frozen at the 2021 release, while Microsoft 365 is a subscription that receives ongoing feature updates and cloud services. Office 2021 does not include 1 TB of OneDrive storage, web/mobile Office apps, or the Microsoft 365 Copilot integration that subscribers get. In exchange, Office 2021 runs fully offline after activation and is not affected by changing subscription terms. For users who want stable behavior and no cloud add-ons, Office 2021 Professional Plus is the practical choice; for users who rely on OneDrive collaboration and want the newest features as they ship, Microsoft 365 is the better match.

Why a perpetual Office is the better choice over Microsoft 365
Practical reasons to pick a one-time-purchase Office over an ongoing Microsoft 365 subscription.

What technical limitations or missing features should buyers know about?

Office 2021 Professional Plus does not include Microsoft Teams as an installed component anymore. Following Microsoft's unbundling that became global on April 1, 2024, Teams must be downloaded separately as the free Microsoft Teams (free) or as a paid Teams license. The suite also does not include 1 TB of OneDrive storage, Microsoft 365 Copilot, or any of the cloud services tied to a Microsoft 365 subscription. Access and Publisher are Windows-only and have no macOS version, so this edition cannot be installed on a Mac. Office 2021 receives security and bug-fix updates but no new feature releases, and retail support ends on October 13, 2026.

Which platforms does Office 2021 Professional Plus support?

Professional Plus is a Windows-only edition. It is compatible with Windows 10 version 1809 and Windows Server 2019 through Windows 11 and Windows Server 2025, in 32-bit and 64-bit builds. It cannot be installed on macOS, ChromeOS, iPadOS, Android, or Linux, because Access and Publisher are not available on those platforms. Mac users who need a perpetual Office instead use Office Home & Student 2021 or Office Home & Business 2021, which lack Access and Publisher.

Windows compatibility with Office
Table of supported Windows and Windows Server versions for Microsoft Office 2010 to Office 2024.

What should users check before choosing Office 2021 Professional Plus?

Confirm three things: that the target machine runs Windows, that Access or Publisher is actually needed, and that Microsoft 365 cloud services such as 1 TB OneDrive are not required. If only Word, Excel, PowerPoint and Outlook are needed on a Windows PC, Office 2021 Home & Business is a cheaper fit. If the workflow depends on Microsoft Teams as part of the suite, plan for a separate Teams installation, because Microsoft no longer bundles Teams with new Office installations after the April 2024 global unbundling. Mac users should pick a different edition entirely.

Frequently asked questions about Microsoft Office 2021 Professional Plus

Is Microsoft Teams included with Office 2021 Professional Plus?

Teams is no longer installed as part of the Office 2021 Professional Plus package on new installations. Since Microsoft's global Teams unbundling on April 1, 2024, Teams is provided as a separate download from Microsoft. Users can install Microsoft Teams (free) at no extra cost or use a paid Teams licence for business features.

Does Office 2021 Professional Plus include OneDrive or other cloud services?

No. Microsoft 365 cloud services such as 1 TB OneDrive storage and the web versions of Word, Excel and PowerPoint are tied to a Microsoft 365 subscription, not to a perpetual Office 2021 licence. Files can still be saved manually to a free personal OneDrive account, but the included storage and Microsoft 365 Copilot are not part of Office 2021.

Can Office 2021 Professional Plus be installed on a Mac?

No. Professional Plus is exclusive to Windows because Access and Publisher have no macOS versions. Mac users can install Office Home & Student 2021 or Office Home & Business 2021, which provide Word, Excel, PowerPoint, Outlook and OneNote on macOS Catalina through macOS Sequoia.

Does Office 2021 receive new features over time?

No. Office 2021 receives only security updates and bug fixes; new features ship in Office 2024 and in the Microsoft 365 subscription instead. Retail support for Office 2021 ends on October 13, 2026, after which no further updates are provided.

Legal Information About Our Products

keys.express and keys.discount are online platforms for product keys. The product keys available in our shops for Windows and other software are inexpensive, secure, legal and come with an activation guarantee.

Below you will find the most important legal information about our products.

Unused and Non-Activated Product Keys

We offer exclusively unused and non-activated product keys. The keys have never been redeemed for activation and are fully available to the purchaser for the first-time activation of the respective product. A key that has already been redeemed could no longer be used for a new activation and is therefore not offered by us.

Trading in these product keys is permissible in the European Union and in Switzerland under current case law, provided that the necessary conditions are met. These conditions are as follows:

• The software must originally have been placed on the market with the consent of the rightholder within the territory of the EU, another contracting state of the EEA, or Switzerland by way of sale.
• The license for the software must have been granted in return for the payment of a fee intended to enable the rightholder to obtain remuneration corresponding to the economic value of the copy of the software.
• The rightholder must have granted the first acquirer the right to use the software permanently (for an unlimited period).
• Any improvements and updates that the subsequently downloaded computer program has compared to the originally downloaded one must be covered by a maintenance agreement concluded between the rightholder and the first acquirer.
• The original licensee must have made their own copies unusable.

This trade is legally permissible because the underlying license was already placed on the market with the consent of the rightholder within the EU/EEA or Switzerland in return for appropriate remuneration. As a result, the so-called principle of exhaustion has taken effect, which permits the resale of individual product keys — in particular those originating from volume license agreements. Microsoft or the respective software provider has already received appropriate remuneration for this.

keys.express and keys.discount ensure that the aforementioned conditions are met and that the lawful use of the software is guaranteed. The requirements arising from European legislation are also observed in Switzerland.

Important note: The acquisition of a product key through the transmission of a combination of numbers and letters in digital form does not, in itself, constitute a license for the lawful use of the program. The license only arises from the respective installation and the associated acceptance of the manufacturer's terms of use.

Further information can be found here:

• Legal assessment by Swiss lawyers

Overview of the Most Important Legal Information

• We offer unused, non-activated product keys for the activation of the respective computer programs. The key alone is not yet a license.
• The license only arises from the respective installation and the resulting acceptance of the terms of use. These terms of use govern the right to use the software between you and the respective manufacturer.
• The principle of exhaustion has, as a rule, taken effect — i.e. the license is "used up" — as soon as it was lawfully placed on the market for the first time. The products concerned are software placed on the market for unlimited-time use in the form of an activatable product key with the option to download the program. Microsoft or the respective software provider has received appropriate remuneration for this.
• You gain access to particularly attractively priced product keys from volume license agreements, which are to be treated legally in the same way as parts of volume licenses upon first acquisition.
• The software itself is always the same original software that is also obtained through official download channels or manufacturer sources. You are therefore not paying for a different or inferior version, but for a valid activation key or a corresponding license.
• All brand names and brand logos are registered trademarks, whose use here serves solely for product description — the ownership rights lie with the respective trademark holder.