Office 2024, Windows 11, ...
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Lifetime license

Microsoft Office 2021 Professional Plus

-42%GBP109.00GBP189.00
word
Word
powerpoint
Powerpoint
excel
Excel
outlook
Outlook
onenote
Onenote
access
Access
publisher
Publisher
Instant delivery by email.
Original Microsoft license
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// Description

Product Info

The most comprehensive Office suite of all time: Microsoft Office 2021 Professional Plus. Get maximum performance for your PC. Office 2021 Professional Plus is the ultimate solution for businesses, self-employed professionals and power users. You get access to all the key Office applications: Word, Excel, PowerPoint, Outlook, OneNote, plus – exclusive to this edition – the database software Access and the layout program Publisher.

// Scope of delivery

Word
Word
PowerPoint
PowerPoint
Excel
Excel
Outlook
Outlook
OneNote
OneNote
Access
Access
Publisher
Publisher

  • License key

    XXXXX-XXXXX-XXXXX-XXXXX-XXXXX

    25-character original Microsoft key

  • Software download

    Microsoft-signed · DE · EN · FR · IT · 32- & 64-Bit

  • Installation & activation guide

    Step-by-step through both processes, in German

  • VAT invoice

    Proper proof of purchase as a PDF

Instantly by email after payment is received. Please also check your spam or junk folder if needed.

// Savings Calculator

A one-time Office licence instead of an ongoing Microsoft 365 subscription – work out for yourself how much you save over the years.

Savings Calculator

You save

CHF 488,00

Comparison

Office 2021 Professional Plus

One-time

M365

Plan

Price
CHF 109.00
CHF 9.95 / month
Term
Unlimited
12 months
Storage
Your local PC
1 TB OneDrive
Internet required
No
Yes
Devices
1 PC
5 devices

Over 5 years: CHF 109 vs. CHF 597
You save CHF 488

// Why Keywi24

5+ years of industry experience

Software licenses are our craft. Thousands of satisfied customers.

EU-compliant & verified

Exhaustion principle per ECJ ruling C-128/11. Every key documented.

90 days of personal help

Real people, not an AI chatbot or call center.

100% original licenses

From verified European license stock. Genuine Microsoft keys with VAT invoice.

Dr. Siegfried Zachhuber, attorney-at-law, Keywi24
Dr. Siegfried ZachhuberAttorney-at-law (Austria), Keywi24

// Legal certainty

Legally on the safe side, personally checked.

The resale of used original licenses is confirmed by the highest courts (CJEU C-128/11, Art. 12(2) URG). Every license at Keywi24 comes from verified European license stock.
More on legal certainty

// It's that easy
In 3 minutes to your licensed software

01:00

Buy

Order at a great price – you receive everything by email

02:00

Download

License key and download link arrive instantly by email.

03:00

Activate

Install. Enter the license key. Done.

// Premium support for every customer

90 days of installation help included

Keywi Support Garantie
  • •Included with every purchase
  • •Friendly help from
    real people
  • •If something doesn't work,
    we'll help you

We help you free of charge for 90 days with installing and setting up your software.

Available weekdays 8:00–18:00 via and * (optional). Remote help only with your consent. Cancel anytime.

Activation guarantee included
// Office versions compared
// Images
Microsoft Word 2021 — die Programmoberfläche — Used with permission from Microsoft Terms
Microsoft Excel 2021 — Tabellen, Formeln, Datenanalyse — Used with permission from Microsoft Terms
Microsoft PowerPoint 2021 — Präsentationen mit Designer-Werkzeugen — Used with permission from Microsoft Terms
Microsoft Outlook 2021 — E-Mail, Kalender und Kontakte — Used with permission from Microsoft Terms
// Product description

Microsoft Office 2021 Professional Plus – The business full version without a subscription

Everything you need, all included With Office 2021 Professional Plus you make no compromises. It is the most comprehensive software suite Microsoft offers for one-time purchase (no forced cloud). This version is aimed specifically at users who need the full feature set for professional work – whether in the home office or in a business environment.

The decisive advantage: Access & Publisher Many users specifically choose the 2021 version because they need Microsoft Publisher for print layouts (flyers, brochures) – a program often missing from newer Office generations. In addition, the powerful database application Microsoft Access is only included in this Professional Plus edition.

What's in the box (full versions):

  • Microsoft Word 2021: Create documents at a professional level.
  • Microsoft Excel 2021: Complex data analysis and spreadsheets made easy.
  • Microsoft PowerPoint 2021: Impress with interactive presentations.
  • Microsoft Outlook 2021: Manage emails, contacts and appointments in one place.
  • Microsoft Publisher 2021: Create professional publications and marketing materials.
  • Microsoft Access 2021: Build and manage your own databases.
  • Microsoft OneNote & Teams: For perfect collaboration and note-taking.

Pay once, use forever As an LTSC license (Long Term Servicing Channel), the software is yours. No monthly fees, no hidden costs. Installation is clean and local on your computer. We guarantee a 100% legal license with an activation guarantee and an invoice including VAT.

System requirements

  • Operating system: Windows 10 or Windows 11 (no support for Mac or Windows 7/8).
  • Processor: At least 1.6 GHz, 2-core processor.
  • Memory (RAM): 4 GB (64-bit) recommended.
  • Hard disk space: 4 GB of available storage.
  • Screen resolution: 1280 x 768 pixels.
  • Graphics: DirectX 9 or later with WDDM 2.0.
  • Internet: Required only for download and activation.

// Spec

System requirements

  • Operating system
    Auch unter Windows Server 2019, 2022 und 2025 lauffähig.
    Minimum
    Recommended
    Windows 10 / 11
    Windows 11
  • Processor
    Minimum
    Recommended
    1,1 GHz, 2 Kerne (64-Bit)
    2 GHz Quad-Core oder schneller
  • Memory
    Minimum
    Recommended
    4 GB
    8 GB
  • Storage
    Minimum
    Recommended
    4 GB freier Speicher
    10 GB SSD
  • Display
    Minimum
    Recommended
    1280 × 768 Pixel
    1920 × 1080 Pixel oder höher
  • Graphics
    Minimum
    Recommended
    DirectX 9 oder höher
    —
  • .NET Framework
    Minimum
    Recommended
    .NET 3.5 oder 4.6+ für einzelne Funktionen
    —
  • Internet
    Danach ist Offline-Nutzung uneingeschränkt möglich.
    Minimum
    Recommended
    Für Download und einmalige Aktivierung
    —
// FAQ

Key questions – clear answers

Nein, diese Edition ist technisch ausschließlich für Windows 10 und Windows 11 entwickelt worden. Mac-Nutzer können diesen Key nicht aktivieren und benötigen stattdessen die "Home & Business for Mac" oder "Standard" Version.

Der Erwerb eines einzelnen Produktschlüssels berechtigt standardmäßig zur Aktivierung und dauerhaften Nutzung auf genau einem Windows-Computer.

Nein, Office 2021 ist kein Abonnement. Sie erwerben eine zeitlich unbegrenzte Dauerlizenz per Einmalkauf und können die Software ohne monatliche oder jährliche Folgekosten dauerhaft nutzen.

Ja, entfernen Sie unbedingt alle älteren Office-Pakete oder vorinstallierte Microsoft 365 Testversionen vor der Installation komplett, um Konflikte bei der Aktivierung des neuen Keys zu verhindern.

Nein, Office 2021 ist nicht abwärtskompatibel. Die Software setzt zwingend Windows 10 oder Windows 11 voraus; für ältere Systeme empfehlen wir Office 2016.

// Delivery

Ready right away thanks to ESD

After your purchase you don't have to wait for the postman. Thanks to Electronic Software Delivery you receive your license key, download link and installation guide within seconds by e-mail — and install immediately.

  • Seconds instead of days
  • Original software from our download library
  • Offline use & data-protection compliant