- One-time payment
- Worldwide
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Office 2021 Professional Plus
US$15.99
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License Type: RETAIL RETAIL LicenseOne key activates the software once, online, right inside the app. It can also be activated with a Confirmation ID through Microsoft's activation portal. Learn more about RETAIL Licenses
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- Delivered by emailRight away
- Activation guideStep by step
- 30-day returnsBefore you reveal
- Help 24/7Chat and WhatsApp
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Activate in three steps
Full activation guide- 01Open the emailYour key, invoice and guide arrive right after payment.
- 02Enter your keyInstall Office with the download link and enter the key when it asks for it.
- 03You are activatedStuck at any step? Chat or WhatsApp, 24/7.
Microsoft Office 2021 Professional Plus – Digital License
BUY OFFICE 2021 PROFESSIONAL PLUS ACTIVATION KEY, DELIVERED BY EMAIL. Lifetime warranty on the computer where you activate it.
This license allows you to activate Office 2021 Professional Plus on your PC. Buy now and your Office 2021 Professional Plus product key is delivered by email. This is a one-time license and the activation key is only valid for installation on 1 PC. This license can only be used once to activate Office 2021.
Office 2021 Professional Plus product key gives you the possibility to activate the software anywhere in the world; you can activate the software on your home or office computers. We offer affordable pricing and a lifetime warranty on the computer where you activate the license.
IMPORTANT: In some cases, this product may need to be activated with a Confirmation ID through Microsoft’s activation portal. Don’t worry, it’s done online and we guide you step by step.
Activate Office 2021 Professional Plus using a product key
Before using the license, please note:
1. We recommend uninstalling any version of Office to avoid license conflicts.
1.1. Go to: Control Panel > Programs and Features > Uninstall.
2. Restart your computer.
If you encounter any activation errors, please do not hesitate to contact us via our Online Chat or WhatsApp. We are online 24/7, ready to help you.
Step 1: Download
1. Download Office 2021 Pro Plus by clicking HERE or use the link provided in your purchase.
Step 2: Install
1. Once the .img or .iso file has downloaded, right-click on it and select Mount (or double-click in Windows 10/11).
2. Inside the folder, locate and run the Setup.exe file.
3. Wait for the installation to display the “All done” message.
Step 3: Activate
1. Open any application (e.g., Word).
2. If a window opens asking you to log in, you can close it or log in (optional).
3. Go to File > Account.
4. Click “Change product key” or “Activate product.”
5. Enter your 25-character key (formatted as XXXXX-XXXXX-XXXXX-XXXXX-XXXXX).
6. Select “Activate.”
Official download from Microsoft
These links download the installer directly from Microsoft's servers (officecdn.microsoft.com). We don't host or change these files.
The file is a disc image (.img) of 4 to 5 GB with the 32-bit and 64-bit versions. Double-click it to open it, run Setup and then activate with your license key.
Choose your language:
- English (United States)
- English (United Kingdom)
- Español (España)
- Español (México)
- Français (France)
- Français (Canada)
- Italiano
- Deutsch
- Português (Brasil)
- Português (Portugal)
- العربية
- Български
- Čeština
- Dansk
- Ελληνικά
- Eesti
- Suomi
- עברית
- हिन्दी
- Hrvatski
- Magyar
- Bahasa Indonesia
- 日本語
- Қазақ тілі
- 한국어
- Lietuvių
- Latviešu
- Bahasa Melayu
- Norsk bokmål
- Nederlands
- Polski
- Română
- Русский
- Slovenčina
- Slovenščina
- Srpski
- Svenska
- ไทย
- Türkçe
- Українська
- Tiếng Việt
- 简体中文
- 繁體中文
| Operating system | Windows 11 Windows 10 (supported with limits since October 14, 2025) Windows 10 LTSC 2019 or 2021, or Windows Server 2019, 2022 or 2025 |
|---|---|
| License for | 1 User |
| Processor | 1.1 GHz or faster, 2-core |
| Architecture | 64 Bit or 32 Bit |
| Memory (RAM) | 4 GB |
| Disk space | 4 GB |
| Display | 1280 x 768 or higher (64-bit Office required for 4K and higher) |
| Graphics | DirectX 9 or later for graphics hardware acceleration |
| Connectivity | Internet access |
| Brand | Microsoft |
|---|---|
| Format | Digital license, one activation per computer |
| Updates | No longer updated by Microsoft (support ended on October 13, 2026) |
| Platform | Office 2021 |
| License type | RETAIL |
| Compatibility | 32-bit and 64-bit |
| Users supported | 1 User per license |
| Activation available in | Worldwide |
| Delivery | Delivered by email |
| Language | Available in all languages (it is possible to change language settings after installation; additional language packs are also available to be downloaded and installed separately) |
| Works on | Windows OS |
| Devices | 1 PC |
| Expiration | No expiration |
| Warranty | Lifetime warranty on the computer where you activate it |
| Authenticity | Genuine software |
13 reviews for Office 2021 Professional Plus
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Which Office 2021 Professional Plus License do you need?
- RETAIL License, 1 PCOne key activates the software once, online, right inside the app. In some cases it can also be activated with a Confirmation ID through Microsoft's activation portal.You're viewing this one
- RETAIL License, 5 PCsOne key activates 5 PCs.View
- CID License, 1 PCIt activates with a Confirmation ID through Microsoft's activation portal. It takes a few minutes and we guide you step by step.View
- BIND License, 1 PC at a timeLinked to your Microsoft account, so you can reinstall it or move it to a new device anytime. BIND Licenses can't be refunded, unless the law of your country requires it.View
- MAK Volume License, for businessesOne key activates every device you order.View
Microsoft ended support for Office 2021 on October 13, 2026.
Not sure which one to choose? Read How our licenses work, with each type's activation, devices and refund terms.
Need a hand? Follow our guides: How to Install and Activate Office 2021 Professional Plus via CID and How to download and install Office 2021 Professional Plus.
Questions about this license
How fast do I get my key?
Right away: we email you a secure link to your license as soon as your payment is confirmed. It also appears in your account.
How long do I have to activate it?
There is no rush: your key waits safely until you reveal it, even months later. Once you reveal it, activate it within 24 hours. Activated in time, it's covered for life, for as long as you use it on the computer where you activated it. RETAIL Licenses activate once per computer: if you later reinstall the software or the operating system, or change the computer's hardware, that activation can't be used again. Warranty details
What if the key does not activate?
Write to us on chat or WhatsApp within 24 hours of revealing your key, and we'll replace it right away.
Can I get a refund?
Yes, within 30 days, as long as you haven't revealed the license. Once it's revealed, it can't be refunded, unless the law of your country requires it, so only reveal it when you're ready to activate it.
Which payment methods do you accept?
Card and crypto.
An unexpected pop-up appeared during setup and I didn’t know how to respond. Support explained it and walked me through the correct option.
I tried activating my license but the program showed a temporary server error. Support told me that occasionally the activation server needs a retry. I tried again a few minutes later and the license activated normally.
Thinking ahead about transferring my license later, I asked support for guidance. They explained the correct procedure in advance, which was very helpful.
Often bought together
What customers added to the same order in the last 12 months.

Jocelyn Marsh –
Very secure website, it gave me confidence when buying.
Reply
Ethan Miller –
Great service, my license arrived instantly and worked perfectly.
Reply
Dominic Gonzales –
Quick, safe, and easy purchase process.
Reply
Jared Lawson –
Amazing service, incredibly fast delivery
Reply
Connor Fields –
I loved how quickly the key was delivered. Support checked in afterward to make sure everything worked, which I really appreciated. Smooth and dependable experience.
Reply
Svetlana Orlova –
The service was excellent from start to finish. The delivery was fast, and the support team helped me resolve a question quickly.
Reply
Penelope Turner –
Everything was fast, clear, and easy to follow. I didn’t encounter any issues during activation, which made the experience very positive.
Reply
Dennis Hamilton –
The website is very user-friendly, and the checkout was seamless. My license activated without any issues, making the experience very positive.
Reply
Valentina Rojas –
The entire setup was smooth, license delivery was immediate, installation was easy, and customer support answered fast.
Reply
Soo Jin Lee –
The entire process feels effortless. The interface is intuitive, the purchase is completed quickly, and support responds without delays.
Reply
Grace Taylor –
Thinking ahead about transferring my license later, I asked support for guidance. They explained the correct procedure in advance, which was very helpful.
Reply
Elena Popescu –
I tried activating my license but the program showed a temporary server error. Support told me that occasionally the activation server needs a retry. I tried again a few minutes later and the license activated normally.
Reply
Emma Johansson –
An unexpected pop-up appeared during setup and I didn’t know how to respond. Support explained it and walked me through the correct option.
Reply