Office 2021 Professional Plus Key — Genuine License

Office 2021 Professional Plus — What You Need to Know

This is a genuine Microsoft Office 2021 Professional Plus license key — the most complete edition of Office 2021 as a one-time purchase. Includes all core Office apps plus Teams, Access and Publisher. No subscription required.

Office 2021 vs Office 2024 — Which Should You Buy?

Our recommendation: If you need Office now and want to save $10, Office 2021 is still a solid choice, though its Microsoft support window ends October 2026 — check the support date above before you decide. If you want the latest version with the longest support lifecycle, go with Office 2024.

What’s Included in Office 2021 Professional Plus

• Word 2021 — advanced document creation and collaboration
• Excel 2021 — XLOOKUP, dynamic arrays and new data types
• PowerPoint 2021 — professional presentations with new transitions
• Outlook 2021 — email and calendar management
• Teams — built-in communication and video conferencing
• Access 2021 — database management (Windows only)
• Publisher 2021 — desktop publishing (Windows only)
• OneNote 2021 — digital note-taking

How to Activate Office 2021 Professional Plus

1. Visit setup.office.com
2. Sign in with your Microsoft account
3. Enter your 25-character product key
4. Download and install Office 2021
5. Open any Office app → File → Account — confirm “Product Activated”

Frequently Asked Questions

Is Office 2021 an LTSC version?

Office 2021 Professional Plus (this product) is the commercial perpetual license version — not the LTSC (Long-Term Servicing Channel) version. The LTSC version is sold separately for enterprise volume deployments. This retail version is the standard choice for individuals and businesses.

Is a Microsoft account required?

Yes, a Microsoft account is needed to activate through setup.office.com. Creating one is free. Once activated, Office works fully offline.

How long will Office 2021 receive support?

Microsoft supports Office 2021 until October 2026. After that date, security updates will stop. If you need longer support, consider Office 2024 (supported until October 2029).

Can I install Office 2021 on a Mac?

Office 2021 Professional Plus is for Windows only. For Mac, we sell Office 2021 Home & Business for Mac separately.

What is the difference between Office 2021 and Microsoft 365?

Office 2021 is a one-time purchase — you own it permanently. Microsoft 365 is an annual subscription that always gives you the latest version plus 1 TB OneDrive storage. If you prefer to own your software without recurring fees, Office 2021 is the right choice.

Want to learn more? Read our guide on How to Install and Activate Microsoft Office or see Best Microsoft Office Version for Small Business