Last updated: 7 November 2026
No. Support for Office 2021 and Office LTSC 2021 (plus Project and Visio 2021) ended on 13 October 2026. Exchange Server 2019 extended support ended on 14 October 2025, and its paid ESU programme ended with the final update in October 2026. The software still runs but gets no security updates.
Where each product stands
| Product | Support ended | Move to |
|---|---|---|
| Office 2021 and Office LTSC 2021 | 13 October 2026 | Microsoft 365 Apps or Office 2024 |
| Project and Visio 2021 | 13 October 2026 | Current Project and Visio plans |
| Exchange Server 2019 | 14 October 2025 (ESU ended October 2026) | Exchange Online or Exchange Server Subscription Edition |
Why this matters
Email and Office files are the front door for phishing and malicious documents. Unpatched Office or Exchange is a well-known route for attackers, and unsupported software can fail Cyber Essentials. Read the risks of unsupported software.
How ABCOM helps
For most small businesses, moving to Microsoft 365 removes servers and version headaches in one go. We plan, migrate mailboxes and train your team.
Quick answers
Do I need Microsoft 365 instead of Office 2021?
Not strictly: Office 2024 is a one-off purchase. Microsoft 365 Apps are always up to date and include cloud services, which is why most small businesses choose them.
Still on Office 2021 or an on-premises Exchange server? We can move you to Microsoft 365 without downtime.
Related answers and guides
- Which Microsoft products reach end of life in 2027?
- Microsoft End of Life Dates 2027
- Risks of unsupported software
- All ABCOM FAQs
Sources and further reading
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