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Microsoft 365 and Office | Excel | For home | MacOS
A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
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Sorry you ran into this after the macOS update. I recommend first making sure Excel stays up to date after system updates. Open the Mac App Store, search Microsoft Excel, and install any available Office updates since these updates address macOS compatibility changes.
Next, open Excel by itself, then select File and Open to test another spreadsheet, which helps confirm whether the issue relates to one file or Excel itself.