Microsoft Office 2016 Professional Plus – License Key for 1 PC

Office 2016 Professional Plus: the full Office suite for Windows 7, 8.1, 10 and 11 PCs

Office 2016 Professional Plus holds a particular place in Microsoft's lineup. It is the last perpetual Office suite that installs on Windows 7 SP1 and Windows 8.1, and it still installs on Windows 10 and Windows 11. One key puts Word, Excel, PowerPoint, Outlook, OneNote, Access and Publisher on a single PC as a one-time purchase, with no subscription. For a computer that cannot or will not move to a newer Windows, it is the most complete Office you can buy.

Two facts frame this product honestly. First, Microsoft ended extended support for Office 2016 on October 14, 2025, so no new security updates are published; the software continues to activate and run, and its final updates remain downloadable. Second, Windows 7 and 8.1 themselves have been out of Microsoft support for years. Office 2016 Pro Plus therefore makes the most sense for an older or isolated PC, a machine that runs a legacy business application and cannot be upgraded, or a household that already uses Office 2016 elsewhere and wants a consistent version. For your everyday work computer on Windows 10 or 11, the Office 2021 Professional Plus key is supported until October 13, 2026 and the Office 2024 Professional Plus key until October 9, 2029.

What the Office 2016 Pro Plus suite gives you

• Word 2016: Tell Me search box, Smart Lookup research pane, real-time co-authoring when documents are saved to OneDrive, and a cleaner ribbon.
• Excel 2016: six new chart types including waterfall, treemap, sunburst, histogram and box and whisker, the Forecast Sheet, and built-in Get and Transform (Power Query) for importing and reshaping data.
• PowerPoint 2016: Screen Recording from the Insert tab, Smart Lookup, the six new chart types shared with Excel, and improved video export and resolution options.
• Outlook 2016: Clutter filtering, modern attachments that link OneDrive files, and support for Exchange, Microsoft 365, Outlook.com, Gmail and IMAP.
• OneNote 2016: the classic desktop OneNote with local notebooks as well as cloud sync.
• Access 2016: desktop relational databases with new templates, the Tell Me box, and linking to SQL Server, SharePoint and other data sources.
• Publisher 2016: desktop publishing for flyers, newsletters, labels and print layouts.
• Stable feature set: as a perpetual release, Office 2016 kept the same features from launch to its final update, which is exactly what fixed-purpose and legacy machines need.

File compatibility is not a concern. Office 2016 reads and writes the same .docx, .xlsx and .pptx formats as Office 2019, 2021, 2024 and Microsoft 365, so a workbook built on a Windows 7 desktop opens cleanly on a colleague's new laptop. The reverse is also true, with the exception of features that did not exist in 2016, such as dynamic array formulas, which Excel 2016 displays as static values.

One detail that matters for older PCs: Office 2016 is the last version to ship a desktop OneNote 2016 with fully local notebooks, and the last version whose installer runs on hardware without the Windows 10 driver model. If you have a lab instrument, a CNC controller or a legacy accounting package that keeps a Windows 7 machine alive, this is the Office that lives beside it.

Office 2016 Professional Plus compared with related editions

The table shows how the 2016 suite sits between the lighter Home and Student edition and the newer 2019 release, with the older 2013 suite for reference.

Choose Office 2016 Home and Student if you do not need Outlook, Access or Publisher. Choose Office 2019 Professional Plus if the PC runs Windows 10 or 11 and you want the 2019 feature set. Choose the 2013 suite only for a very old machine. Office 2016 Professional Plus is the right pick when the computer runs Windows 7 SP1 or 8.1, or when you need the classic OneNote 2016 and the full seven-application set.

System requirements for Office 2016

Office 2016 was written for the hardware of its time, which is why it runs comfortably on machines that struggle with newer software.

• Operating system: Windows 7 Service Pack 1, Windows 8.1, Windows 10 or Windows 11 (also Windows Server 2008 R2 and later).
• Processor: 1 GHz or faster x86 or x64 processor with SSE2 instruction set.
• Memory: 2 GB RAM; 4 GB recommended for the 64-bit version.
• Disk space: 3 GB of available space.
• Display: 1280 x 800 resolution; DirectX 10 graphics card for hardware acceleration.
• Internet connection for download and one-time activation. A Microsoft account is not required for a Pro Plus key.
• .NET Framework 3.5 or 4.5 and later for some features. Windows 7 must have Service Pack 1 installed.

On Windows 7 the installer requires Service Pack 1 and benefits from having the final Windows 7 updates applied. On Windows 10 and 11 the 64-bit build is recommended; on older 32-bit Windows 7 systems, use the 32-bit installer. Do not install Office 2016 on a PC that already has Microsoft 365 or Office 2019 or 2021 Click-to-Run installed; remove those first. Standalone 2016 applications, such as Visio 2016, Project 2016 or a second Outlook 2016 profile, co-install without trouble, but a 2019 or later standalone app will not sit beside a 2016 suite. If you are unsure whether an old machine qualifies, send us its Windows version and edition before ordering and we will confirm.

Licensing explained for the 2016 suite

This is a perpetual license for one PC: pay once, activate once, use indefinitely. There is no subscription, no renewal and no expiry. Because Microsoft's support has ended, there are no further security patches, but Microsoft's activation servers continue to serve older Office versions and the final updates remain available through Update Now.

Transfer rights follow the license type, which we state in the Product Overview table at the top of this page. Retail keys can move to a replacement PC after the suite is uninstalled from the original. OEM keys stay with the first PC. Volume (MAK) keys carry a limited activation count and are meant for organizations. Activation itself is the same for every type: open any Office app after installation, go to File, Account, Change Product Key, enter the 25 characters and confirm. If Microsoft requests telephone activation, our team walks you through the Installation ID and Confirmation ID exchange.

Why buy this key from Software in Store

Software in Store is operated by MAKERS UNITY LLC of Sheridan, Wyoming, an independent reseller with no affiliation to Microsoft. We sell genuine keys, deliver by email and back every order with a person you can reach. With an older product like this one, we make a point of stating the support situation plainly and helping you confirm that your Windows version qualifies before you pay.

• Key emailed within minutes of payment, every day of the week, and saved under My Account.
• Official Microsoft download link for the Office 2016 installer, plus a guide that covers Windows 7 and 8.1 specifics.
• 30-day money-back guarantee: replacement key or full refund if the key will not activate and we cannot fix it.
• Real support at support@softwareinstore.com 7 days a week, including phone activation help.
• Encrypted, PCI-compliant checkout with card, Apple Pay or Google Pay.

Read why trust us for more on how we work. We list our business address on every page, and the same people who answer pre-sales questions handle activation problems afterwards.

Related products

Need the suite on several legacy machines? The Office 2016 Professional Plus for 5 PCs pack covers up to five computers with one key. If you are still licensing the operating system itself, we carry Windows 7 Professional and Windows 8.1 Professional keys. Mac users in the same household can match the generation with Office 2016 Home and Business for Mac. See every edition in our Office 2016 category.

Order Office 2016 Professional Plus today

Add the key to your cart, pay securely and check your inbox: within minutes you will have a genuine Office 2016 Professional Plus key, the Microsoft download link and a guide to get all seven applications running on your Windows 7, 8.1, 10 or 11 PC. Our 30-day money-back guarantee covers the order. Visit how it works for the steps after checkout, or read the FAQs for common activation and transfer questions.