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⚠️ Important notice: Microsoft support for Office 2021 ends October 13, 2026, and support for Office 2019 already ended October 14, 2025. Both keep working and license keys stay valid, but only Office 2024 will receive security updates beyond October 2026. Factor this into the decision below.
Choosing between Microsoft Office 2021 and Office 2024? Both are one-time purchase lifetime licenses — you pay once and own them permanently with no subscription fees. But they differ in included apps, features, platform support, and how long Microsoft will keep them updated. This guide compares both versions side by side, explains where Office 2019 fits in 2026, and tells you exactly which version is right for your situation.
Quick answer: If you need the most complete suite including Access and Publisher, choose Office 2021 Professional Plus. If you want the latest features, Mac compatibility, and the longest support lifecycle, choose Office Home and Business 2024.
Many buyers confuse Office 2021 and Office 2024 with Microsoft 365, so it is worth clarifying the difference before comparing versions.
Note that Microsoft Teams is not included in either Office 2021 or Office 2024 perpetual licenses — Microsoft distributes Teams separately, and the free version can be downloaded from Microsoft directly.
| Feature | Office 2021 Professional Plus | Office Home & Business 2024 |
|---|---|---|
| Word, Excel, PowerPoint, Outlook | ✅ Included | ✅ Included |
| OneNote | ✅ Included | ✅ Included |
| Access (database app) | ✅ Included | ❌ Not included |
| Publisher (desktop publishing) | ✅ Included | ❌ Not included |
| Microsoft Teams | ❌ Not included (separate download) | ❌ Not included (separate download) |
| Platform | Windows only | Windows and Mac |
| License model | One-time purchase, 1 PC | One-time purchase, 1 PC or Mac |
| Support ends | October 13, 2026 | October 9, 2029 |
| Excel functions | XLOOKUP, LET, dynamic arrays | All 2021 functions + new 2024 additions |
| Outlook interface | Classic Outlook | Modernized Outlook |
Key takeaway: Office 2021 Professional Plus is the more complete suite — it adds Access and Publisher on top of the core apps. Office Home and Business 2024 covers the core five apps with the newest features, Mac support, and three more years of security updates.
Office 2024 includes every function introduced in Office 2021 — XLOOKUP, LET, and dynamic arrays — plus new 2024 additions for data analysis. If your work lives in spreadsheets, the 2024 release is the more future-proof choice.
Word 2024 improves real-time co-authoring and document recovery compared with the basic co-authoring in Word 2021, making it a better fit for teams that share documents.
PowerPoint 2024 updates the Cameo feature for embedding your camera feed directly into slides and improves the recording tools introduced in 2021, alongside the Morph transition and Zoom capabilities both versions share.
Office 2024 ships with the modernized Outlook interface, while Office 2021 keeps the classic Outlook layout. Users who prefer the familiar classic interface may actually consider this a point in favor of Office 2021.
As of 2026, Office 2019 is already out of support, Microsoft Office 2021 is supported until October 13, 2026, and Office Home & Business 2024 is supported until October 9, 2029.
| Version | Support ends |
|---|---|
| Office 2019 | Ended October 14, 2025 |
| Office 2021 (all editions) | October 13, 2026 |
| Office Home & Business 2024 | October 9, 2029 |
What this means in practice: Office 2021 has about a year of security updates remaining. It will keep working after October 2026 — the license never expires — but it will no longer receive security patches. Office 2024 gives you three additional years of updates. If you plan to keep the same license for many years, that difference matters more than any single feature.
Office 2019 was sold in Home & Student, Home & Business, and Professional Plus editions, and some retailers still offer it. Since Microsoft support ended on October 14, 2025, Office 2019 no longer receives security updates, and it lacks newer Excel functions such as XLOOKUP and dynamic arrays. For a new purchase in 2026, Office 2021 Professional Plus costs little more and remains supported — there is no longer a good reason to buy Office 2019.
Across both generations, the editions break down the same way: Home & Student covers Word, Excel, and PowerPoint for personal and school use; Home & Business adds Outlook (and OneNote in 2024) for work use; and Professional Plus adds Access and Publisher for the full desktop suite.
Choose Office 2021 Professional Plus if:
Choose Office Home and Business 2024 if:
| Aspect | Office 2021 / 2024 (lifetime) | Microsoft 365 (subscription) |
|---|---|---|
| Payment | One-time purchase | Monthly or annual fees |
| Feature updates | ❌ Security updates only | ✅ Continuous new features |
| Cloud storage | ❌ Not included | ✅ 1 TB OneDrive |
| Works offline | ✅ Fully | ✅ Yes (requires periodic sign-in) |
| Best for | Users who want to pay once and be done | Users who need cloud storage and always-current apps |
| Component | Requirement |
|---|---|
| Operating system | Windows 10 or Windows 11 (Office 2024 also supports macOS — one of the three most recent versions) |
| Processor | 1.6 GHz or faster, 2-core |
| Memory | 4 GB RAM (2 GB for 32-bit Office 2021) |
| Disk space | 4 GB available |
| Display | 1280 x 768 resolution |
| Graphics | DirectX 9 or later with WDDM 2.0 driver |
Remember: Office 2021 Professional Plus is Windows-only. Mac users should choose Office Home and Business 2024.
Sticking with an older suite for compatibility reasons? Office Professional Plus 2019 and Office Home & Student 2019 are still available — though note Office 2019 support has ended. And since Office 2021/2024 require Windows 10 or 11, make sure your operating system is current with a Windows 11 Pro lifetime license.
Both are one-time purchase lifetime licenses. Office 2021 Professional Plus is the more complete suite — Word, Excel, PowerPoint, Outlook, OneNote, Access, and Publisher — and runs on Windows only. Office Home and Business 2024 includes the five core apps with the newest 2024 features, works on Windows and Mac, and is supported until October 9, 2029, versus October 13, 2026 for Office 2021.
Yes, but not for much longer. Support for Office 2021 ends on October 13, 2026, with no extended support phase. The software keeps working after that date and your license remains valid, but it stops receiving security updates. For longer support, choose Office Home and Business 2024 (supported until October 9, 2029).
Both are one-time purchases — you pay once, own the license permanently, and pay no monthly or annual fees. This is different from Microsoft 365, which is a subscription that stops working when you stop paying.
No. Microsoft has unbundled Teams from Office perpetual licenses. Office 2021 Professional Plus includes Word, Excel, PowerPoint, Outlook, OneNote, Access, and Publisher. The free version of Teams can be downloaded separately from Microsoft.
No — it is a Windows-only product. Mac users should choose Office Home and Business 2024, which supports both Windows and macOS.
On Windows: Windows 10 or 11, a 1.6 GHz dual-core processor, 4 GB RAM (2 GB for 32-bit Office 2021), 4 GB disk space, 1280 x 768 display, and DirectX 9 or later with a WDDM 2.0 driver. Office Home and Business 2024 also runs on one of the three most recent macOS versions.
No. Office 2019 support ended on October 14, 2025, so it no longer receives security updates, and it lacks newer features like XLOOKUP in Excel. Choose Office 2021 Professional Plus for the most complete suite at the lowest price, or Office Home and Business 2024 for the latest features and longest support.
MSOfficeStore.us sells genuine lifetime license keys for Office 2021 Professional Plus and Office Home and Business 2024, delivered by email within minutes. Every key is verified before sale, live chat setup assistance is included, and a money-back guarantee applies if a key cannot be activated.
