Windows 11 Professional & Office 2021 Professional Plus Keys

The Windows 11 Professional & Office 2021 Professional Plus bundle gives you two separate licence keys in one order: one for Windows 11 Pro and one for Office 2021 Professional Plus. It suits work PCs that need business tools such as BitLocker and Remote Desktop, plus Word, Excel, PowerPoint, Outlook, OneNote, Publisher and Access. Microsoft support for Office 2021 ends on 13 October 2026. Both keys are sent by email after payment, with download links and step-by-step activation instructions.

• 1 Windows 11 Pro key that activates 1 PC
• 1 Office 2021 Professional Plus key for 1 Windows PC
• Office apps: Word, Excel, PowerPoint, Outlook, OneNote, Publisher and Access
• One-time purchase: no subscription for either product
• Digital delivery by email: nothing is shipped

What's included in the Windows 11 Pro and Office 2021 Professional Plus bundle?

You get two licences, each with its own 25-character product key. The Windows key activates the operating system and the Office key activates the Office apps. The keys are independent, so activating one doesn't affect the other.

Office 2021 Professional Plus includes Word, Excel, PowerPoint, Outlook, OneNote, Publisher and Access. Office 2021 is the last Office release that includes Publisher, which Microsoft is retiring.

Should I choose a Home or a Pro bundle?

Choose Home for everyday browsing, email and documents, and Pro if you need business tools such as BitLocker, Remote Desktop or Access databases. The table compares the two bundle types for Windows 11 and Office 2021.

This bundle is the Pro option. Pro runs everything Home does, so the extra tools are simply there when you need them; we often see it chosen for laptops because of BitLocker.

How long is Office 2021 supported?

Microsoft ends support for Office 2021 on 13 October 2026. After that date Office 2021 keeps working, but it no longer receives security updates. Windows 11 is not affected and keeps updating through Windows Update.

If a longer support window matters to you, the Office 2024 versions are supported until October 2029: compare all Windows + Office bundles. Microsoft lists the dates in its list of products reaching end of support in 2026.

What are the system requirements for this bundle?

The PC must meet the Windows 11 requirements, which are stricter than Office's: TPM 2.0, Secure Boot and a compatible 64-bit processor. In practice, a PC that runs Windows 11 also meets the minimums for Office 2021 Professional Plus.

To check a PC, run Microsoft's PC Health Check app or read the official Windows 11 requirements.

In what order should I install and activate the two keys?

Activate Windows first, then install Office. That way, if you decide on a clean Windows install, you won't have to install Office twice.

1. If needed, install Windows 11 from Microsoft's official media, then open Settings → System → Activation.
2. Select Change product key, enter the Windows key from your order email and wait until it says "Windows is activated".
3. If the PC runs Home, let it restart: Windows upgrades to Pro in place and keeps your files and apps.
4. Remove any older Office version or Microsoft 365 trial under Settings → Apps.
5. Download Office 2021 Professional Plus with the link in your order email and run the installer.
6. Open Word or Excel, enter the Office key when asked, then check that File → Account shows "Product Activated".

The most common mix-up we see is entering the Office key in the Windows activation screen, or the other way round. Each key works only in its own product, so check which is which in your order email before you start.

Frequently asked questions

What happens to Office 2021 after October 2026?

It keeps working. After 13 October 2026 Microsoft stops releasing security updates for it, so documents still open and save normally, but newly found vulnerabilities are no longer fixed. If long-term support matters, Office 2024 is supported until October 2029.

I already have Windows 11 Home. Can I upgrade with this Pro key?

Yes. Enter the Pro key under Change product key in the Activation settings, and Windows upgrades to Pro in place. Your files, apps and settings stay as they are, so afterwards you only need to install and activate Office.

Can I use the Windows key and the Office key on different PCs?

Yes. They are two separate licences, so you can activate Windows on one PC and Office on another. Each key still activates only one PC, and Office needs a supported version of Windows on whichever computer you install it on.

Is this bundle a subscription?

No. Both Windows 11 Pro and Office 2021 Professional Plus are one-time purchases with no monthly or yearly fee. Windows updates arrive through Windows Update, and Office receives security fixes for as long as Microsoft supports Office 2021, at no extra cost.

Looking for something else? See all software bundles, or browse our Office 2021 keys.