Microsoft Office 2021 Pro Plus (5 Keys)

What is included in Microsoft Office 2021 Professional Plus?

Word - Create professional documents with advanced formatting tools.
Excel - Analyze data quickly with powerful functions and charts.
PowerPoint - Build engaging presentations with templates and animations.
Outlook - Manage email, calendars, contacts, and tasks efficiently.
OneNote - Capture notes, ideas, and meeting details in notebooks.
Publisher - Design brochures, flyers, and other marketing materials.
Access - Create and manage relational databases for business data.

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

Microsoft Office - Full Comparison of all Versions from 2010 to 2024
Which Programmes are Included?

Microsoft Office license types explained:
Differences between Retail, MAK, Bound, Unbound and Microsoft 365 - and which option is right for you

Is Microsoft Office 2021 Professional Plus a one-time purchase?

Yes, it is offered as a perpetual license with a single upfront payment.
You pay once instead of an ongoing subscription fee.
The installed apps keep working after successful activation.
Ideal for organizations preferring predictable, one-time software costs.

What is the difference between Office 2021 Professional Plus and Microsoft 365?

Office 2021 Professional Plus is a fixed-feature one-time purchase, while Microsoft 365 is a subscription with continuous feature updates and cloud services.
Office 2021 keeps the same major feature set after installation.
Microsoft 365 adds new features and improvements over time.
Microsoft 365 bundles additional services like Exchange, SharePoint, and OneDrive.
Office 2021 is best for stable on-premises setups without frequent changes.

What is the difference between Office 2021 Professional Plus and Office 2021 Standard?

Professional Plus includes all Standard apps plus advanced tools like Access and often additional collaboration options, making it better suited for larger organizations.
Professional Plus adds Access and Publisher compared with many Standard editions.
Standard editions are often aimed at smaller businesses and specific scenarios.

Does Office 2021 Professional Plus work offline?

Yes, all desktop apps work offline once installed and activated on the device.
You can create, edit, and save files without an internet connection.
Internet is only needed for activation, updates, and online collaboration features.
Offline capability is useful for secure or bandwidth-limited environments.

What are the system requirements for Office 2021 Professional Plus?

You need a supported version of Windows with sufficient CPU, RAM, and storage to run Office 2021 Professional Plus smoothly.
Requires a modern Windows 10 or Windows 11 installation.
Needs several gigabytes of free disk space for apps and updates.
A reliable internet connection is recommended for activation and updates.

How long is Office 2021 Professional Plus supported?

Office 2021 follows a fixed lifecycle with security updates provided until its published end-of-support date.
After support ends, security updates are no longer released for the suite.
The apps may still run but with increasing security and compatibility risks.
Organizations often plan upgrades before the official end-of-support point.

Can I install Office 2021 Professional Plus on multiple devices?

Many agreements license Professional Plus per device or per user.
KMS or Active Directory activation lets you manage multiple installations centrally.

How is Office 2021 Professional Plus activated in organizations?

Most organizations activate Office 2021 Professional Plus using Key Management Service or Active Directory-based activation.
KMS lets devices automatically renew activation when connected to the network.
Active Directory activation works when machines join the organization domain.
IT admins control keys, activation servers, and deployment tools centrally.

What customers say about Microsoft Office 2021 Professional Plus:

"Perfect for our company because we keep the familiar Office apps without a subscription."
"Access and Publisher in the same suite make reporting and marketing much easier for us."
"Performance is solid, and staff appreciate that nothing major changes every month."
"One-time licensing fits our budgeting model better than ongoing cloud subscriptions."

That's why you can buy a cheap key for Microsoft Office 2021 Professional Plus with us with confidence

Instant delivery - Product keys and downloads available within minutes.
Activation guarantee - If activation fails, you receive a new key.
Download included - Secure official download link always provided after purchase.
Easy installation - Clear step-by-step instructions guide you through setup.
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Easy exchanges - Problematic keys replaced quickly, without unnecessary bureaucracy.
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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.