Microsoft Office 2016 Professional Plus – License Key for 5 PCs

Microsoft Office Professional Plus 2016 for 5 PCs: one key for a mixed fleet of Windows computers

Small organizations rarely replace every computer at once. A typical shop, clinic or family business has a Windows 11 laptop at the front, a Windows 10 desktop in the back office and a Windows 7 machine that runs the label printer or the old accounting program. Microsoft Office Professional Plus 2016 is the one perpetual Office suite that installs on all of them, and this five-PC key licenses the complete seven-application suite on up to five such computers with a single one-time purchase. No subscription, no renewals, and every seat gets Word, Excel, PowerPoint, Outlook, OneNote, Access and Publisher.

We state the lifecycle plainly. Microsoft ended extended support for Office 2016 on October 14, 2025. The applications install, activate and run as before, and the final updates remain available, but no new security patches are issued. That is acceptable for legacy hardware, back-office and fixed-purpose PCs, training rooms and environments that need to stay on the 2016 build for compatibility with macros or add-ins. For front-line computers on Windows 10 or 11 that process outside email all day, the Office 2021 Professional Plus for 5 PCs pack with support to October 13, 2026 is the better investment.

Key features on every one of the five installations

• Complete suite per seat: Access and Publisher are included on every PC, not only the first; each seat is identical.
• Excel 2016: waterfall, treemap, sunburst, histogram and box and whisker charts, Forecast Sheet, and built-in Get and Transform (Power Query).
• Word 2016: Tell Me, Smart Lookup and real-time co-authoring through OneDrive or SharePoint.
• Outlook 2016: Clutter, modern attachments, and connections to Exchange, Microsoft 365, Outlook.com, Gmail and IMAP mailboxes.
• PowerPoint 2016: Screen Recording, Smart Lookup, new chart types and improved video export.
• OneNote 2016 desktop: local notebooks for teams that keep records off the cloud.
• Windows 7 SP1 and 8.1 compatible: the last Office generation to support them, alongside Windows 10 and 11.
• Mixed bitness: 32-bit installs on older machines and 64-bit on newer ones under the same key.
• Single license record: one key, one order email and one entry under My Account instead of five separate purchases to track.

Standardizing five computers on one Office version pays off daily. Templates, macros and Access databases behave the same on every desk, staff move between machines without relearning menus, and documents look identical wherever they are opened. Files remain fully compatible with Office 2019, 2021, 2024 and Microsoft 365, so exchanging work with customers and suppliers on newer versions is not a problem.

Buyers of this pack often run software that no longer exists in a modern form: a dental practice management program that requires Windows 7, a machine shop's CAM software tied to a 32-bit driver, a nonprofit's donor database in Access 2016 format. Microsoft Office Professional Plus 2016 keeps the rest of the office working around those constraints without forcing a hardware refresh.

Choosing between this pack and its alternatives

The table compares the five-PC key with the single-PC key of the same edition, with the five-PC Office 2019 pack and with the older Office 2010 five-device pack we also list.

Buy the Office 2016 Professional Plus 1-PC key if only one machine needs the suite. Buy the Office 2019 Professional Plus for 5 PCs pack if every computer already runs Windows 10 or 11 and you want the 2019 feature set. Buy the 2010 pack only for truly antique hardware. The 2016 five-PC pack is the right answer when at least one of your five machines still runs Windows 7 SP1 or 8.1, or when you need the classic desktop OneNote.

System requirements for each PC

Every one of the five computers must meet these minimums, which are modest by current standards.

• Operating system: Windows 7 SP1, Windows 8.1, Windows 10 or Windows 11 (also Windows Server 2008 R2 and later).
• Processor: 1 GHz or faster x86 or x64 with SSE2.
• Memory: 2 GB RAM (4 GB recommended for 64-bit).
• Storage: 3 GB free per PC.
• Display: 1280 x 800; DirectX 10 graphics for hardware acceleration.
• Internet connection on each PC for download and activation; no Microsoft account needed for a Pro Plus key.
• No Microsoft 365, Office 2019 or Office 2021 Click-to-Run installation left on the PC.

Windows 7 machines need Service Pack 1 and should have the last available Windows updates applied before Office is installed. Use the 32-bit Office installer on 32-bit Windows and wherever a legacy 32-bit add-in or Access database driver must keep working; use 64-bit everywhere else.

A practical rollout order: start with the newest PC, confirm activation and updates, and export your Outlook signatures, Word templates and Quick Access Toolbar settings. Then move to the older machines, where installation takes longer and where you may need to install Service Pack 1 or .NET Framework updates first. Keep every PC that shares an Access database on the same bitness, because 32-bit and 64-bit Access cannot open each other's add-ins or ODBC drivers. Finish by running Update Now on each seat so all five are on the final Office 2016 build.

Licensing explained: five activations on one key

Your Microsoft Office Professional Plus 2016 key carries five activations. On each PC, install from the Microsoft link, open an Office app and enter the same key at File, Account, Change Product Key. Microsoft's servers count each activation until all five are used. The computers do not have to share a network, an owner or an activation date, so you can roll the suite out over weeks as machines become free.

The license is perpetual: a one-time purchase that never renews or expires. Transfer rights follow the license type shown in the Product Overview table at the top of this page. Retail-type licenses can move to replacement PCs after removal from the old ones; OEM-type licenses remain with the original hardware; volume (MAK) keys, the usual form for multi-PC packs, have a fixed activation pool intended for organizations, and a reinstall that consumes an extra activation may need our help. Keep the order email as your record of the key and the date of each activation.

Why buy this key from Software in Store

Software in Store is run by MAKERS UNITY LLC in Sheridan, Wyoming. We are an independent reseller with no affiliation to Microsoft, and we sell genuine keys delivered by email with human support behind them. A five-PC key on legacy hardware can raise questions weeks after purchase, when the fourth machine is finally free for installation; we are still here to answer them.

• Key delivered by email within minutes of payment, 7 days a week, and saved under My Account.
• Official Microsoft download link, so all five PCs install the same clean Office 2016 build.
• Installation guide covering Windows 7, 8.1, 10 and 11 specifics and activation tracking.
• 30-day money-back guarantee with replacement key or full refund when we cannot make an activation work.
• Support from a real person at support@softwareinstore.com every day, including phone activation.

See why trust us for more on how we operate. If you are buying for a business and need an invoice with your company name, or if you want us to check your list of Windows versions before you commit to five seats, one email is enough; we reply the same day, every day.

Related products

Bringing an older machine up to date at the same time? We sell Windows 7 Professional and Windows 10 Pro keys. A Mac in the same office can match the generation with Office 2016 Home and Business for Mac. If a desk needs email only, Outlook 2016 is available as a single key. Browse every edition in our Office 2016 category.

Order Microsoft Office Professional Plus 2016 for 5 PCs

Pay securely by card, Apple Pay or Google Pay and within minutes you will hold a genuine Microsoft Office Professional Plus 2016 key with five activations, the Microsoft download link and a guide for rolling it out across your computers. The 30-day money-back guarantee covers the pack. See how it works for the steps after checkout and the FAQs for activation and transfer questions.