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Microsoft Office 2021 Professional Plus (Digital Download)
34.99 $ USD
- ✔Genuine Retail key: one-time purchase, lifetime license for 1 PC
- ✔7 apps: Word, Excel, PowerPoint, Outlook, OneNote, Publisher and Access
- ✔Fast delivery: product key and download link by email
- ✔Online activation with free support
- ✔Works with Microsoft Teams
- ✕Windows only, not for Mac
Need the installer? Office 2021 download and activation guide
Microsoft Office 2021 Professional Plus
The complete one-time-purchase Office suite for Windows. Pay once and keep it, with no monthly subscription and no renewal. Office 2021 Professional Plus includes all the classic desktop apps, plus Publisher and Access, which aren't included in Office 2024.
ℹ️ Good to know about Office 2021 support
Microsoft's support for Office 2021 ended on October 13, 2026. Office 2021 keeps working and can still be activated, but Microsoft no longer releases security updates for it. Need Publisher? Office 2021 is the version that includes it. Want longer support? See Office 2024 Pro Plus.
What's New in Office 2021
📊 Smarter Excel
XLOOKUP, XMATCH, LET and dynamic arrays make lookups and formulas faster and easier.
🌙 Dark Mode
A full dark theme in Word and other apps that's easier on your eyes during long sessions.
🎥 Better PowerPoint
Record presentations with narration, replay ink drawings, and arrange slide elements for screen readers.
📝 Focused writing in Word
Line Focus, built-in translation, and improved inking help you write and review faster.
🗄️ Publisher & Access
Create flyers and newsletters, and build databases. Access 2021 adds a new Date/Time Extended type.
♿ Accessibility tools
An improved Accessibility Checker helps make your documents easy for everyone to read.
What You Get
| License | Retail, one-time purchase, lifetime use on 1 Windows PC |
| Delivery | Product key and download link by email |
| Activation | Online, with a free Microsoft account |
| Apps | Word, Excel, PowerPoint, Outlook, OneNote, Publisher, Access |
| Support | Free activation help by email and Live Chat |
System Requirements
| Operating system | Windows 11 or Windows 10 |
| Processor | 1.6 GHz, 2-core |
| Memory | 4 GB (64-bit), 2 GB (32-bit) |
| Storage | 4 GB available disk space |
| Display | 1024 × 768 |
| Other | Internet access and a Microsoft account |
🛠️If Your Key Doesn't Activate
- Install from your delivery emailUse the download link we sent you. If another Office version is installed, uninstall it first and restart.
- Enter the key inside an Office appOpen Word, go to File → Account → Activate Product, and paste the key from your email.
- Seeing "Unlicensed Product"?Usually a Microsoft 365 trial is blocking it. Our Unlicensed Product guide fixes it step by step.
- "Product key is not valid"?Copy and paste the key instead of typing it. See our key not valid guide.
Still stuck?
Send us your order number and a screenshot. We typically reply within 1–6 hours.
💬Frequently Asked Questions
Is this a Retail key?
Does it include Publisher and Access?
Why is Office asking me to subscribe or start a trial?
Can I use this key on more than one PC?
Does this work on a Mac?
What's your refund policy?
10 reviews for Microsoft Office 2021 Professional Plus (Digital Download)
Instant Digital Delivery
This is a digital product, so there's nothing to ship and no waiting for a package. Your key arrives by email, within 2–10 minutes after payment.
1. Complete your payment
Pay securely by card, PayPal or Google Pay. Your order is confirmed instantly.
2. Check your email
Within 2–10 minutes, you receive your product key, the official download link, and step-by-step instructions.
3. Install & activate
Follow the instructions in the email. Activation takes just a few minutes.
| Delivery time | 2 to 10 minutes |
| Delivery method | |
| Shipping cost | Free, no physical shipping |
| Payment | Visa, Mastercard, American Express, Discover, PayPal, Google Pay |
📩 Didn't receive your email?
Check your Spam or Promotions folder first. Still nothing? Contact us at support@krbkeys.com or via Live Chat with your order number, and we'll resend it right away.
Jmlooperjr (verified owner) –
I was a little leary about purchasing this for such a cheap price. It took a day to get me key and I was real worried that it was a scam site and I fell victim. I then opened up the chat box which they claim is open 24 hours a day. Nobody answered my chat request. I then tried dialing the contact number and it had been disconnected and there was no new number. I had a real bad feeling that I had been taken and was all prepared to battle it out with my bank the next day.
Lo and behold! When I awoke today the email with the key were waiting for me. After installing from the provided link and entering the key provided, I now have a perfectly legit installation.
Lesson learned
Give 24 hrs for email to arrive. Don’t be in such a rush.
Update
I’m totally satisfied with my working key. This is my first purchase of office since 2008. I can’t believe how much Microsoft is selling the stand alone version and I have it for $49.95. Thanks and I highly recommend it to anyone looking for a solid activation.
— Review originally posted on Trustpilot
Bill (verified owner) –
Ordered and received immediately!
Great site! Great Service!
— Review originally posted on Trustpilot
Taiwo A. (verified owner) –
The key was perfect
— Review originally posted on Trustpilot
Wayne M. (verified owner) –
Super quick response, Works every time.
The best place for keys.
— Review originally posted on Trustpilot
Ronald S. (verified owner) –
Great price and Super fast delivery!
— Review originally posted on Trustpilot
Regis M. (verified owner) –
You meet my expectations
— Review originally posted on Trustpilot
JC –
Product keys were delivered immediately after payment was made. Provided instructions were clear and installation of Windows 11 Pro and Office Pro Plus 2021 without any problems. Online activation, other sellers state phone activation.
— Review originally posted on Trustpilot
Miles E. (verified owner) –
Excellent transaction! Instant delivery. Will buy again.
— Review originally posted on Trustpilot
King (verified owner) –
So wonderful great price!
— Review originally posted on Trustpilot
Justin J. (verified owner) –
Great buy for me. its my 4th time
— Review originally posted on Trustpilot