How to Install Microsoft Office on an iMac Running macOS Sierra 10.12
Question details
The user needs to install Microsoft Office on an older 2011 iMac running macOS Sierra 10.12.6, which is no longer supported by the latest Microsoft 365 installers.
- Product
- Microsoft 365 / Office for Mac
- Device & OS
- macOS Sierra 10.12.6
- Scenario
- Attempting to install Microsoft Office on an older Mac that cannot be upgraded to a newer macOS version, resulting in an incompatibility block.
- Observed behavior
- The current Microsoft 365 installer fails to run, displaying an error message stating that the software requires a newer macOS release to continue.
Verify your exact macOS version and Mac model by clicking the Apple menu and selecting 'About This Mac'. Confirm that your 2011 iMac cannot officially be upgraded to macOS 10.15 or newer before proceeding with older software versions.
Download and Install an Older Compatible Version (Office 16.30)
Since the latest Office installers block older operating systems, you must manually download the last supported version for macOS Sierra.
Microsoft officially supports only the three most recent major macOS versions for Microsoft 365. For macOS Sierra (10.12.6), the final compatible release is Office for Mac version 16.30.
Visit the official Microsoft Office update history page for Mac using your web browser and scroll down to the release archives from late 2019.
Find the download link specifically labeled for version 16.30 (typically released around October 2019) and download the installer package (.pkg file).
Double-click the downloaded .pkg file and follow the on-screen prompts to install the Office suite onto your iMac's hard drive.
Open Microsoft Word or Excel from your Applications folder and sign in using your active Microsoft 365 subscription credentials to activate the suite.
Try WPS Office for Mac as a Lightweight Alternative
If you are struggling with legacy Microsoft Office versions and unsupported installers on your older Mac, consider switching to WPS Office. It provides a robust, lightweight, and highly compatible suite for all your document needs without the strict hardware requirements.
- 1. Download for Mac: Visit the official WPS website and download the macOS installation file.
- 2. Install the Application: Open the downloaded .dmg file and drag the WPS Office icon into your Applications folder.
- 3. Open Your Files: Launch WPS Office and directly open your existing Microsoft Office files to continue working seamlessly.
Frequently Asked Questions
Why can't I install the latest Microsoft 365 on macOS Sierra?
Microsoft’s policy is to only support the three most recent major macOS versions for Microsoft 365 and Office for Mac. macOS Sierra (10.12) is no longer within this rolling support window, so modern installers are coded to block it.
Will Office version 16.30 still work with my modern Microsoft 365 subscription?
Yes, you can sign in and activate Office version 16.30 using a current, valid Microsoft 365 subscription. However, you will only have access to the features that were available at the time version 16.30 was released.
Is it safe to use an older version of Office on my Mac?
While the software will function perfectly fine for everyday offline tasks, legacy versions like 16.30 no longer receive security patches. You should exercise caution if you handle highly sensitive documents or regularly open files from unknown sources.
Can I upgrade my 2011 iMac to a newer macOS to get the latest Office?
Officially, a mid-2011 iMac tops out at macOS High Sierra (10.13), which is also too old for the current Microsoft 365 releases. You would need a significantly newer Mac to run the very latest Microsoft Office updates natively.
