Digital Key — Instant Delivery

Microsoft Office 2021 Key — Professional Plus

Office 2021 Pro Plus — genuine lifetime key, $6.90

Office 2021 Professional Plus $6.90

Word · Excel · PowerPoint · OneNote
Outlook for email + Access for databases
Genuine key, activates straight with Microsoft

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Genuine Microsoft Office 2021 Professional Plus licence
Word, Excel, PowerPoint, OneNote, Outlook and Access
One-time purchase — no monthly subscription
Lifetime licence, activates directly with Microsoft
Runs on Windows 10 and Windows 11

Short answer: Office 2021 Professional Plus at RebootDoctor is a genuine one-time-purchase Microsoft key for $6.90. You get Word, Excel, PowerPoint, OneNote, Outlook and Access — the full professional set — on Windows 10 or 11, with no monthly subscription. The key is emailed within minutes and activates straight with Microsoft. It's the budget pick: same everyday apps as the 2024 release for less money.

Why People Still Choose Office 2021

Not everyone needs the newest release. The apps you actually open every day — Word for documents, Excel for spreadsheets, PowerPoint for slides, Outlook for mail — work the same in 2021 as they do in 2024. What you save is money: this is the previous generation, so the key costs less while doing the same job.

You’re getting the Professional Plus edition, which is the full set — including Outlook and Access, which the cheaper “Home” bundles leave out. So it’s not a stripped-down version; it’s the complete professional lineup at the lower, older-generation price.

Genuine Key, Not a Trial

Worth being upfront about what you’re actually buying: a genuine Microsoft key, activated through Microsoft’s own servers — not a trial, and not a login shared across a dozen other buyers. Once it’s tied to your machine, it stays activated. There’s no subscription ticking in the background and nothing that expires on its own.

2021 or 2024 — Which Should You Get?

Want to spend the least and just need Word, Excel, PowerPoint and Outlook? Office 2021 is the smart buy.
Want the newest release with the longest Microsoft support window? Go for the 2024 key instead.
Running an older PC or reinstalling on a machine you’ve used for years? 2021 is a safe, familiar fit.

Not sure whether 2021 or 2024 fits your setup? Tell us what you run and what you use Office for, and we'll tell you which key to buy before you pay.

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Frequently Asked Questions

Is Office 2021 still worth buying?

For most people, yes. It runs the same Word, Excel, PowerPoint and Outlook you use every day, installs on Windows 10 and 11, and costs less than the 2024 release. If you don't specifically need the newest version, 2021 does the same job for less.

How is Office 2021 different from Office 2024?

The core apps are the same. Office 2024 is the newer release with a longer support window and a handful of refreshed features. Office 2021 is the previous generation — cheaper, proven, and fine for everyday documents, spreadsheets and email.

Is this a real Microsoft key or a trial?

A genuine one. This Office 2021 Professional Plus key activates straight against Microsoft's own servers — no trial, no shared account. Delivery is by email, usually within minutes, with the activation steps included.

Do I have to pay every year?

No ongoing fees. This is a one-time purchase, unlike Microsoft 365's monthly or yearly billing — you pay once and the license is attached to that install for good.

Which Windows does it run on?

Windows 10 and Windows 11. It does not install on macOS — message us if you need Office for a Mac and we'll point you to the right option.

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