Microsoft Project 2021 Professional Key
- Key delivered by email right after payment
- Download link and activation guide included
- Secure checkout · digital product, nothing shipped
Project Professional 2021 is the Professional edition of Microsoft's desktop project-management app, for schedules, Gantt charts and resource planning. It suits project managers who plan work across tasks, people and deadlines. This listing is one key for one Windows PC, paid for once with no subscription. You get the key by email after payment, with a download link and activation instructions.
- 1 product key for 1 Windows PC
- One-time purchase, no subscription
- Professional edition for Windows: Team Planner, timesheets, Project Server connection
- Microsoft end-of-support date: 13 October 2026
- Digital delivery by email: nothing is shipped
What can you do with Project Professional 2021?
Project builds a schedule from your task list: you set durations and dependencies, and it calculates the dates and draws the Gantt chart. When one task slips, every dependent task moves with it, so you always see the real finish date.
You assign people and costs to tasks, save a baseline, and compare actual progress against the plan. Built-in reports show workload, cost and progress, and the Timeline view gives managers a summary at a glance.
Project 2021 keeps the core scheduling, resource and reporting tools of earlier versions, so plans created in Project 2019 or 2016 open directly.
What's the difference between Project Professional and Project Standard?
Both editions build schedules, Gantt charts and reports and track costs. Professional adds Team Planner for balancing people's workloads, timesheets, and the option to connect to Project Server for team-wide project management.
| Project Standard 2021 | Project Professional 2021 | |
|---|---|---|
| Tasks, schedules and Gantt charts | Yes | Yes |
| Built-in reports | Yes | Yes |
| Resource levelling, pools and cost tracking | Yes | Yes |
| Team Planner (who is working on what) | No | Yes |
| Timesheets | No | Yes |
| Connect to Project Server | No | Yes |
| Licence | 1 user, 1 PC | 1 user, 1 PC |
If you'd rather pay monthly, Microsoft's subscription route is Planner and Project Plan 3, which includes the Project desktop app. Microsoft retired its Project Online service on 30 September 2026, so a server connection now means an on-premises Project Server.
What are the system requirements for Project Professional 2021?
Project Professional 2021 needs a Windows 11 PC with a 1.1 GHz dual-core processor, 4 GB of RAM and 4 GB of free disk space. Microsoft lists the same minimums for the whole Office 2021 family, including Visio and Project. There's no Mac version of Project.
| Component | Minimum requirement |
|---|---|
| Operating system | Windows 11 |
| Processor | 1.1 GHz or faster, 2 cores |
| Memory (RAM) | 4 GB |
| Storage | 4 GB of available disk space |
| Display | 1280 × 768 resolution |
| Graphics | DirectX 9 or later for hardware acceleration |
| Internet | Needed to download, install and activate |
Microsoft's current requirements list Windows 11, as Windows 10 reached end of support on 14 October 2025. Full details are on Microsoft's Office system requirements page.
When does support for Project Professional 2021 end?
Microsoft set 13 October 2026 as the end-of-support date for Project Professional 2021 and the rest of Office 2021. From that date the app keeps working and stays activated, but it no longer receives security updates.
If the PC handles email, client files or anything sensitive, we suggest a supported release such as Project Professional 2024, which Microsoft supports until 9 October 2029. Project Professional 2021 still suits PCs that must match an existing Office 2021 setup.
How do I install and activate Project Professional 2021?
Download Project with the link in your order email, install it, then enter your 25-character product key when Project asks for it. Remove other Project versions first, because leftover installs are the most common reason setup or activation fails.
- Uninstall any older version of Project from Settings → Apps.
- Download Project Professional 2021 using the link in your order email.
- Run the installer and wait until it finishes.
- Open Project and enter the product key from your email when asked.
- Check File → Account: it should show “Product Activated”.
A common problem we see is setup stopping because of other Office software on the PC. Project can be installed next to Office, including Microsoft 365 Apps, but both must use Click-to-Run and the same 32-bit or 64-bit edition. Remove older MSI-based installs, such as Office 2016 or Project 2016, before you start.
Frequently asked questions
Can I share a schedule with people who don't have Project?
Yes. Export the plan as a PDF through File → Export, or save it as an Excel workbook, and copy the Timeline into an email or PowerPoint slide. People can read those files without having Project installed.
What happens to Project Professional 2021 after 13 October 2026?
Project Professional 2021 keeps working and stays activated, but Microsoft no longer releases security updates for it from that date. For a PC that handles email or sensitive files, we suggest a supported version such as Project Professional 2024, which gets updates until 9 October 2029.
Can I move Project to a new PC later?
This key is for one PC. If you replace your computer, contact our support team with your order number before you uninstall from the old PC. Whether a transfer is possible depends on the licence type, so it's best to ask first.
How many people can use Project Professional 2021?
The licence covers one user on one Windows PC, in line with Microsoft's licence for Project Professional. In a team, each person who edits schedules needs their own licence; people who only read exported PDFs or Excel files don't.
Need Office too? See Office 2024 suites, or browse our Office, Visio and Project bundles.
