How to Fix Office 2016 for Mac Sign-In Issues on OS X 10.11.6
Question details
The user is unable to sign in and activate Microsoft Office on an older Mac running OS X 10.11.6 using a Microsoft 365 account.
- Product
- Microsoft Office 2016 for Mac
- Device & OS
- Mac OS X 10.11.6
- Scenario
- Setting up an older Mac computer for online classes and attempting to activate Office software using an existing Microsoft 365 subscription.
- Observed behavior
- Sign-in and activation fail because the incorrectly downloaded version of Microsoft 365 or Office is incompatible with OS X 10.11.6.
Ensure your Mac is connected to the internet and verify that you have your Microsoft 365 account credentials ready for activation.
Install Office 2016 for Mac Version 16.16.27
Installing the specific final supported build for OS X 10.11.6 ensures system compatibility and allows successful sign-in.
Newer versions of Microsoft 365 are not compatible with OS X 10.11.6. To fix the sign-in issue, you must install build 16.16.27, which is the final version of Office 2016 designed to work on this specific operating system.
Open the 'Applications' folder on your Mac, locate any currently installed Microsoft Office apps (like Word or Excel), right-click them, and select 'Move to Trash' to remove the incompatible versions.
Navigate to the official Microsoft update release history page in your web browser and download the installation package for Office 2016 for Mac version 16.16.27.
Double-click the downloaded .pkg file and follow the on-screen installation prompts to install the compatible Office suite on your Mac.
Open Microsoft Word from your Applications folder. When the 'What's New' window appears, click 'Get Started' and then select 'Sign In'. Enter the email and password for your Microsoft 365 account to activate the software.
Verify Your Microsoft 365 Subscription Status
Ensure that your Microsoft account has an active subscription to successfully activate the older Office software.
Try WPS Office for Mac – A Lightweight, Compatible Alternative
If you are struggling to install or activate outdated Microsoft Office versions on an older Mac OS, WPS Office provides a free, lightweight, and highly compatible alternative. It supports modern and legacy systems while offering a familiar interface for all your document needs.
- 1. Download the Installer: Visit the official WPS Office website and download the Mac installation package.
- 2. Install WPS Office: Open the downloaded .dmg file and drag the WPS Office icon into your Applications folder.
- 3. Open Your Files: Launch WPS Office from your Launchpad to instantly open, edit, and save your existing Word, Excel, and PowerPoint documents.
Frequently Asked Questions
Can I activate Office 2016 for Mac using a Microsoft 365 subscription?
Yes, a Microsoft 365 subscription can generally activate Office 2016 for Mac, provided you have installed the correct, compatible build (such as version 16.16.27) for your older operating system.
Why is my Microsoft 365 download failing to run on OS X 10.11.6?
Newer versions of Microsoft 365 applications require more recent versions of macOS to operate. OS X 10.11.6 (El Capitan) is unsupported by the latest Office releases, which is why a legacy build is required.
Is it safe to use Office 2016 for Mac after its end of support?
Office 2016 for Mac reached its end of support on October 13, 2020. While the software will continue to function normally for daily tasks, it will no longer receive security patches or bug fixes from Microsoft.
