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Microsoft Office

Microsoft Office 2021 Professional Plus

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Microsoft Office 2021 Professional Plus is the largest desktop suite of the 2021 generation – the core Office apps plus Access, bought once instead of rented every month.

  • Lifetime Guarantee from an Official Reseller — Permanent licences have no expiry on the licensed device. If the supplied key fails to activate, we replace it free of charge.
  • Word, Excel, PowerPoint and Outlook, plus Access
  • Perpetual licence for 1 PC – no renewal date
  • Professional Plus edition, used in businesses for database and reporting work
Microsoft support ended on 13 October 2026 – ours continues

Microsoft no longer releases security updates or provides technical support for Office 2021. The apps keep working as before.

Our support does not end: we are still here for you permanently – if you have a problem or need help with installation or activation.

Want security updates? Office 2024 Professional Plus →

Original price was: €338.01.Current price is: €35.03.Current offer

Instant key delivery after purchase

In stock

4.72/5 Excellent Read reviews ↓ 1,372 reviews · collected independently by Trusted Shops

“Great price, fast service, what's not to like!”

Verified order · 13 Oct 2026
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Buyer protection by TheUnitySoft on every orderLifetime activation guarantee · replacement or refund4.72 · 1,372 Trusted Shops reviews

Description

Microsoft Office 2021 Professional Plus

Microsoft Office 2021 Professional Plus combines the core Office programs with the Access database in one perpetual licence for Windows. You buy it once, install it on your own PC and use it without a monthly fee.

What is included

  • Word, Excel, PowerPoint and Outlook in the 2021 version
  • The Access database, which the Standard edition does not include
  • A perpetual licence for one Windows PC
  • Security updates from Microsoft during the support period of this release

Who this licence is for

Professional Plus is aimed at offices and self-employed users who work with databases and reports as well as documents. Without that need, Office 2021 Standard offers the same everyday programs at a lower price.

Delivery and activation

Your product key and the download link are sent to the email address you use at checkout, straight after your payment is confirmed. A step-by-step activation guide comes with it, and if a key ever fails to activate we replace it free of charge.

Good to know

This is a perpetual desktop licence, not a Microsoft 365 subscription. It does not include the online services, the additional cloud storage or the yearly feature updates that come with Microsoft 365.

Office 2021 Professional Plus: frequently asked questions

Which applications are included in Office 2021 Professional Plus?

Word, Excel, PowerPoint, Outlook and the Access database in their 2021 versions, installed locally on one Windows PC. It is the edition for offices and self-employed users who work with databases and reports as well as documents. Teams is not part of the suite and is available separately from Microsoft.

When does Microsoft’s support for Office 2021 end, and will it still work afterwards?

Microsoft ends support for Office 2021 on 13 October 2026, with no extension and no extended security updates. The applications keep working after that date, but Microsoft no longer provides security fixes, bug fixes or technical support. If you want a suite with support until October 2029, choose Office 2024 Professional Plus instead.

Office 2021 or Office 2024 Professional Plus – which should I buy?

Both are one-time purchases with the same core applications – Word, Excel, PowerPoint, Outlook and Access – for one Windows PC. Office 2024 is the newer release with Microsoft support until 10 October 2029, while support for Office 2021 ends on 13 October 2026. Office 2021 is the lower-priced option if you need a familiar suite for a PC that will not be in use for many more years; otherwise Office 2024 is the longer-lasting choice.

Which Windows versions does Office 2021 Professional Plus run on?

Microsoft supports Office 2021 on Windows 10 and Windows 11. It is a Windows-only product; for macOS, choose Office 2021 Home & Business for Mac. The installation files are downloaded from Microsoft via the link in your email.

Is Office 2021 Professional Plus a one-time purchase?

Yes. You pay once, and the perpetual licence has no subscription, renewal date or monthly fee. Unlike Microsoft 365 it does not include cloud storage, online services or new feature updates – you get the desktop applications at a fixed price.

Can I open files from colleagues who use Microsoft 365 or Office 2024?

Yes. Office 2021 uses the same file formats – .docx, .xlsx and .pptx – so documents can be exchanged with Microsoft 365, Office 2024 and older versions. Functions that exist only in newer releases may appear differently, but the files open and save normally.

Can I use Outlook 2021 with my existing email account?

Yes. Outlook 2021 supports the common account types – Microsoft 365 and Exchange, Outlook.com, Gmail and IMAP/POP mailboxes. Add the account under File › Add Account with your email address and password; for Gmail you sign in through Google and allow access.

Does Office 2021 Professional Plus work offline?

Yes. The suite is installed locally on your PC and works without an internet connection; your files stay on your device unless you choose to save them to a cloud service. An internet connection is needed for the download, for activation and for Microsoft’s updates.

How activation works

Your product key and download link arrive by email about 60 seconds after payment.

Full activation guarantee

Whatever the problem, we make sure your licence gets activated. If a key cannot be activated, we replace it free of charge – with no time limit.

  1. 1
    Open the email

    Look for the email with your licence details – check the spam folder if you don’t see it.

  2. 2
    Download and install

    Download the installation file from the link in the email and run the installer.

  3. 3
    Enter your product key

    Enter the key from the email when the program asks for it.

  4. Activated

    Activation runs online and usually takes only a few seconds.

Questions during setup? Our team helps you on WhatsApp or via the contact form.

Reviews

What our customers say about TheUnitySoft

Collected independently by Trusted Shops after every order — unedited, good and bad. These are reviews of our shop: delivery, the licence keys and our support. They are not reviews of this individual product.

4.72Excellent1,372 reviews · Trusted Shops

Shop rating, collected and verified by Trusted Shops.

How these reviews are collected After every order Trusted Shops sends an invitation to review us. We cannot edit, select or delete what customers write — the reviews are stored and published by Trusted Shops, not by us.
Frequently asked questionsEverything buyers usually want to know before they order.
How quickly will I receive my licence key?
As soon as your payment is confirmed. Your key, the official download link and step-by-step instructions arrive by email. If nothing has arrived after a few minutes, check your spam folder and then get in touch; we will resend it straight away.
Is this a genuine licence?
Yes. Every key is a brand-new, unused manufacturer licence and stays valid permanently.
How long is the licence valid?
Permanently. You pay once and the licence does not expire. There is no subscription and no recurring fee.
On how many devices can I use it?
One device per licence. If you need several, simply order the matching quantity. For larger volumes write to us and we will quote you a price.
How do I activate my licence?
Your email contains the key, the download link and a step-by-step guide. Follow it once and the licence stays on your device permanently. If you would like someone to walk you through it, message us with your order number. Your purchase is also covered by TheUnitySoft buyer protection.
Where do I find my invoice and my keys?
In your account. Sign in and open My account → Orders — your licence keys, download links and the invoice for every order are stored there permanently.
Can I get help with installation?
Yes. Write to us by email or WhatsApp and a real person will help you with the download, the installation and the activation. Support is included, not an extra.
Still unsure about something? Talk to us — we answer every message.
4.72Excellent1,372 reviews · Trusted Shops