Microsoft Office 2021 Professional Plus (Download Link + Key)

Microsoft Office 2021 Professional Plus is the complete one-time-purchase Office suite for one Windows PC: Word, Excel, PowerPoint, Outlook, OneNote, Access and Publisher. This listing includes a product key and direct download link, so you can install and activate in minutes with no subscription.

Apps Included

• Word 2021 — real-time co-authoring, Dark Mode and improved inking.
• Excel 2021 — XLOOKUP, XMATCH, LET, dynamic arrays and STOCKHISTORY.
• PowerPoint 2021 — recording with presenter video and new stock media.
• Outlook 2021 — built-in Translator and faster search.
• OneNote, Access and Publisher — notes, databases and desktop publishing. Access and Publisher are not included in Home & Business editions.

Support Status

Microsoft support for Office 2021 ends on October 13, 2026. After that it keeps working, but without security updates. For the longest support, choose Office 2024 Professional Plus. Note that Office 2024 no longer includes Publisher.

Office 2021 Pro Plus vs Office 2021 Home & Business

See also Office 2021 Professional Plus, or license 5 PCs at once with Office 2021 Professional Plus for 5 PCs.

System Requirements

• Windows 11 or Windows 10
• 1.6 GHz, 2-core processor
• 4 GB RAM (64-bit), 2 GB (32-bit)
• 4 GB disk space, 1280 × 768 display

How to Install and Activate

1. Uninstall any older Office versions or trials (Settings → Apps).
2. Download the installer from the link in your order email and run setup.
3. Open Word and go to File → Account → Change Product Key.
4. Enter your key. Activation completes online in a few seconds.

Office 2021 Professional Plus Download & Install Guide (With Screenshots)

Want every screen explained? Follow our step-by-step Office 2021 Professional Plus download, install and activation guide, with a screenshot for each step and fixes for common activation errors.

Why Buy From MicrosoftSoftwareSwap?

• 30-day money-back guarantee — if the key does not work for you, request a refund within 30 days.
• Lifetime replacement warranty — if an activated key ever stops working, we replace it free of charge.
• Instant email delivery — key, download link and instructions by email, usually within minutes.
• Free 24/7 support by email and Discord for installation and activation.

Office 2021 Professional Plus FAQ

What does "download link" mean?

Your order email includes a link to the official Office 2021 installer, so you don't have to search for it.

Does it include Publisher?

Yes. Office 2021 is the last Office version with Publisher.

Can I install it on a Mac?

No. It's Windows only. Mac users need Office for Mac.

Is it a subscription?

No. It's a one-time purchase for one PC.

What happens after October 2026?

Office keeps working without security updates.

Order your Office 2021 Professional Plus key today.