Office for Mac Issues

Fix Excel Not Opening After Mac OS Upgrade

Maira Mehtab Sep 21, 2026 869 views

Question details

The user is unable to launch Microsoft Excel on a Mac mini after installing a recent Apple operating system update.

Product: Microsoft Excel
Device & OS: macOS (Mac mini)
Scenario: Attempting to open the application after upgrading the Mac operating system.
Observed behavior: Microsoft Excel completely fails to open or launch on the device.

Before you start

Verify your exact Mac model and macOS version by clicking the Apple menu and selecting 'About This Mac' to ensure you are downloading the correct software updates.

Solution 1Recommended

Update macOS and Excel to the Latest Versions

Outdated software versions can cause compatibility issues after a major OS upgrade, so applying the latest patches is the most effective fix.

Major operating system updates often introduce new architectures that older versions of Microsoft Excel might not fully support. Keeping both your OS and your applications updated resolves most launch failures.

Verify and Update OS Version

Click the Apple menu in the top-left corner, select 'System Settings' (or System Preferences), click 'General', and go to 'Software Update' to ensure your macOS is fully up to date.

Update Microsoft Excel

Open the Mac App Store and click 'Updates' in the sidebar, or launch Microsoft AutoUpdate from another Microsoft app, to check for and install any available updates for Microsoft Excel.

Restart Your Mac

Click the Apple menu and select 'Restart' to apply all software updates and refresh background system processes before trying to open Excel again.

macOS Naming Convention: Note that Mac minis run on macOS, not iOS. Be sure you are looking for macOS updates when troubleshooting desktop applications.

Solution 2

Reinstall Microsoft Excel

If updating does not resolve the issue, the application files might be corrupted and require a clean installation.

Free Microsoft Office alternative

Use WPS Office as a Reliable Mac Alternative

If Microsoft Excel continues to crash or fail to open after your macOS upgrade, consider switching to WPS Office. It provides a lightweight, highly compatible, and free alternative that runs smoothly on Mac systems.

1. Download WPS Office for Mac: Visit the official WPS website to download the latest Mac version.
2. Install and Launch: Drag the downloaded file to your Applications folder and open WPS Office.
3. Open Your Excel Files: Click 'Open' on the WPS home screen and select your existing .xlsx files to continue working seamlessly.

Fully compatible with Microsoft Excel (.xlsx, .xls, .csv) formats.Lightweight design that runs flawlessly on the latest macOS updates.Includes Spreadsheet, Writer, and Presentation tools in one single app.Familiar user interface for a seamless transition from Microsoft Office.

microsoft office alternative - wps office

Frequently Asked Questions

Why does Excel stop working after a Mac update?

Major macOS upgrades can introduce new system architectures or security protocols that older versions of Excel are not optimized for, resulting in compatibility issues and launch failures.

Will I lose my Excel spreadsheets if I reinstall the application?

No, your spreadsheets and documents are saved separately on your Mac's hard drive or cloud storage. Reinstalling the app only replaces the software program files.

How do I find out which version of macOS my Mac mini is running?

Click the Apple logo in the top-left corner of your screen and select 'About This Mac'. A window will appear displaying your current operating system name and version number.

Does WPS Office work on older Mac models like the Mac mini?

Yes, WPS Office is highly optimized and lightweight, making it an excellent choice for a wide range of Mac devices, including older Mac mini models, without slowing down the system.

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