Office Professional Plus 2021 – Lifetime Licence Key (Last Version with Publisher)
Product description
Office Professional Plus 2021 as a one-time purchase, and the last Office version that includes Publisher. Word, Excel, PowerPoint, Outlook, OneNote, Access and Publisher on Windows, for 1, 3 or 5 PCs. Key and installer link by email in about 60 seconds, covered by our 30-day refund promise.
Support note: Microsoft's security updates for Office 2021 end on 13 October 2026. The software keeps working and activating after that date, but it will no longer be patched. If you do not need Publisher, Office Professional Plus 2024 costs the same and is supported until October 2029.
What you get
| Apps | Word, Excel, PowerPoint, Outlook, OneNote, Access, Publisher; Skype for Business optional |
| Not included | Teams, OneDrive storage, Copilot |
| Edition | Office LTSC Professional Plus 2021, 64-bit, volume licence (MAK activation) |
| Licence | Perpetual. One payment; security updates until 13 October 2026 |
| PCs covered | 1, 3 or 5 Windows PCs |
| Platform | Windows 10 or 11. Not for Mac (see Home & Business 2021 for Mac) |
| Delivery | Product key and installer link by email, usually within 60 seconds, 24/7 |
| Activation | Online with Microsoft; phone activation if online activation is blocked |
Who should buy Office 2021 in 2026
Three kinds of buyer: anyone who relies on Publisher, which Microsoft removed from Office 2024; anyone whose company standardised on 2021 and needs matching installs; and anyone replacing an unsupported Office 2016 or 2019 on a tight budget for the next year. For everyone else, Office 2024 is the same price with three more years of updates. Our Office 2021 vs 2024 vs Microsoft 365 guide lays out the differences.
How installation and activation work
- Pay, and the email arrives with your key and the download link.
- Uninstall any older Office first, then restart.
- Run the installer; it downloads Office 2021 from Microsoft's servers.
- Open Word, File > Account > Activate Product, enter the key. Phone activation is available if online activation is blocked.
Step by step with screenshots, download links for seven languages and the SHA-256 checksums: Office 2021 Professional Plus download and installation guide. The features guide covers what each app does.
Frequently asked questions
Is Office Professional Plus 2021 a one-time purchase?
Yes. Pay once, no renewal. Microsoft security updates continue until 13 October 2026; the apps keep working after that.
Is this key genuine?
Yes. Every key activates directly with Microsoft. Nerdused Ltd is a UK company (no. 16876657) and a member of the Microsoft Partner Program (ID 6467441). If a key does not activate, we replace it or refund you in full within 30 days.
Does Office 2021 include Publisher and Access?
Yes, both. It is the last perpetual Office with Publisher; Office 2024 has Access only in Professional Plus and no Publisher at all.
Does it work on a Mac?
No. For Mac, see Office Home & Business 2021 for Mac or Home & Business 2024.
Should I buy 2021 or 2024?
2024 unless you need Publisher: same price, supported three years longer.
How many PCs does one key cover?
The option you buy: 1, 3 or 5 PCs.
Specifications
| License type | One-time purchase — lifetime license |
| Devices | 1, 3, or 5 PCs |
| Platform | Windows 10 / 11 |
| Delivery | Digital — email, ~60 seconds |
| Language | All languages supported |
| Refunds | 30 day full refund guarantee |
| Microsoft support ends | 13 October 2026 |
How it works
Order
Choose your license and check out securely in seconds.
Receive key
Your product key & download link arrive by email in ~60 sec.
Install
Download and follow our step-by-step guide.
Activate
Enter your key, activate instantly. Done
