Office for Mac Issues

How to Fix the 32-Bit to 64-Bit Microsoft Office Error on Mac

WPS Content Manager Sep 25, 2026 869 views

Question details

The user encounters a compatibility error indicating a 32-bit to 64-bit mismatch when attempting to open Microsoft Word, Excel, or other Office applications on a Mac.

How to Fix the 32-Bit to 64-Bit Microsoft Office Error on Mac

Product: Microsoft Office for Mac
Device & OS: macOS
Scenario: Launching an older Microsoft Office application or an outdated Dock shortcut on a modern version of macOS that no longer supports 32-bit architecture.
Observed behavior: The macOS system blocks the Office application from launching and displays a warning that the app needs to be updated because it is a 32-bit application incompatible with the current 64-bit macOS.

Before you start

Verify that you have administrative access to your Mac, as you will need the correct permissions to modify or remove applications from the Applications folder.

Solution 1Recommended

Identify and Remove Outdated 32-Bit Office Applications

Check your Microsoft Office version to confirm if it is an older 32-bit release (like Office 2011), and remove it so that you can use a compatible 64-bit version.

Modern macOS versions, such as macOS Catalina, Big Sur, and Sonoma, exclusively support 64-bit applications. If you migrated data from an older Mac, you may still have Microsoft Office 2011 (version 14.x) or earlier installed.

Since these older versions are strictly 32-bit, they will not run on modern macOS environments. You must remove them and ensure you are launching a newer 64-bit application (any release post-August 2016).

Check Version via Finder

Open 'Finder' and go to your 'Applications' folder. Locate your Microsoft Office app (such as Microsoft Word), right-click it, and select 'Get Info'. Look at the version number under the General section.

Check Version within the Application

If the app can still open (on an older macOS), launch the application, click on the app's name in the top menu bar (e.g., 'Word'), and select 'About Word' to view the version details.

Uninstall the 32-Bit Application

If you confirm the version is 14.x or earlier, drag the application from the Applications folder to your Trash. Right-click the Trash icon and select 'Empty Trash' to completely remove the outdated software.

Launch the 64-Bit Version

Install or locate your modern, 64-bit version of Office in the Applications folder. If you previously pinned the old version to your Dock, right-click the old Dock icon, choose 'Options', and select 'Remove from Dock', then pin the new 64-bit app.

Identify and Remove Outdated 32-Bit Office Applications

Dock Shortcuts Issue: Often, the 64-bit version is already installed, but users accidentally click the old 32-bit application's shortcut in the Mac Dock. Updating the Dock shortcut typically resolves the error immediately.

Free Microsoft Office alternative

Switch to WPS Office for a Seamless 64-Bit Mac Experience

If your current Microsoft Office version is too old to run on macOS and you prefer not to purchase a new subscription, consider switching to WPS Office. It is a fully 64-bit optimized, highly compatible office suite that runs flawlessly on macOS.

1. Download the Mac Version: Visit the official WPS Office website and download the installation package designed for macOS.
2. Install WPS Office: Open the downloaded .dmg file and drag the WPS Office icon into your Applications folder.
3. Open Your Documents: Launch WPS Office and easily open, edit, and save all your existing Microsoft Office files natively.

Native 64-bit support optimized for modern macOS and Apple Silicon (M1/M2/M3) chips.Excellent format compatibility with Microsoft Word (.docx), Excel (.xlsx), and PowerPoint (.pptx).Free to download and lightweight, freeing up disk space on your Mac.Familiar user interface ensuring a smooth transition with almost zero learning curve.

microsoft office alternative - wps office

Frequently Asked Questions

Why does my Mac say Microsoft Word needs to be updated?

Since the release of macOS Catalina (10.15), Apple permanently dropped support for all 32-bit applications to improve system performance and security. If you are using Microsoft Office 2011 or an older version, your Mac will prompt you to update because those applications are strictly 32-bit.

How can I easily see all 32-bit apps installed on my Mac?

Click the Apple logo in the top-left corner, select 'About This Mac', and click 'System Report'. Scroll down the left sidebar to 'Software', click 'Applications', and look at the '64-Bit (Intel)' column to see which apps say 'No'.

Will deleting the old 32-bit Office application delete my documents?

No. Your personal files, such as Word documents and Excel spreadsheets, are saved independently on your hard drive. Deleting the outdated Office application files from the Applications folder will not affect your documents.

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