Office for Mac Issues

How to Fix Excel on Mac Saving OneDrive Files with the Wrong Name

Phi Hung Vo Oct 1, 2026 869 views

Question details

Users experience an issue where Excel for Mac saves workbooks to OneDrive using incorrect or generic filenames (such as One Drive.xlsx) instead of the user-assigned names.

How to Fix Excel on Mac Saving OneDrive Files with Wrong Names

Product: Microsoft Excel, OneDrive
Device & OS: macOS
Scenario: Saving or uploading custom-named Excel workbooks to OneDrive from a Mac computer.
Observed behavior: The file is saved with an unexpected, generic name on OneDrive, overwriting the user's intended filename and occasionally causing upload errors.

Before you start

Ensure your Mac has a stable internet connection and verify that your Microsoft 365 account credentials perfectly match your signed-in OneDrive account.

Solution 1Recommended

Rename the File and Verify Extensions

Use this solution to ensure the filename doesn't contain unsupported characters causing cloud sync conflicts.

OneDrive has specific file naming limitations across different operating systems. Using unsupported special characters can force Excel and OneDrive to generate a generic fallback filename during the upload process.

Check for invalid characters

Ensure your current filename does not include special characters like slashes, asterisks, quotation marks, or question marks.

Rename the workbook

Change the file name to something simple and alphanumeric, such as 'Levels.xlsx'.

Verify file extension

Make sure the file ends with the standard '.xlsx' extension before attempting to upload it to OneDrive again.

Account matching: Confirm whether your OneDrive account is personal or business, and ensure it strictly matches the account signed into your Office applications.

Solution 2

Disable AutoSave by Default in Excel Preferences

Turn off automatic saving to prevent Excel from prematurely uploading and overriding your custom filenames with generic defaults.

Solution 3

Test by Saving the File Locally

Save a copy of the workbook to your Mac's local storage to determine if the renaming issue is caused by OneDrive syncing or Excel itself.

Free Microsoft Office alternative

Use WPS Office for Mac for Seamless File Management

Tired of sync issues and unexpected filename glitches in Excel? WPS Office provides a lightweight, highly compatible alternative for Mac users. Enjoy seamless local and cloud file management without unexpected naming errors.

1. Download WPS Office: Get the free WPS Office installation package for your Mac from the official website.
2. Open your spreadsheet: Launch WPS Spreadsheet and open your existing .xlsx file without worrying about formatting loss.
3. Save securely: Save your file locally or to your preferred cloud storage service, keeping your exact filenames intact.

Fully compatible with Microsoft Excel (.xlsx, .xls) and CSV formats.Reliable local and cloud file saving without unexpected filename overrides.Free, lightweight, and features a familiar tabbed user interface.Built-in seamless cloud syncing that respects your custom file naming conventions.

microsoft office alternative - wps office

Frequently Asked Questions

Why does Excel for Mac change my filename to 'One Drive.xlsx'?

This usually happens when there is a synchronization conflict, a mismatch between your Office and OneDrive accounts, or when your original filename contains characters that OneDrive does not support, forcing it to use a generic default name.

What characters are not allowed in OneDrive filenames?

OneDrive does not support certain characters in file or folder names, including " * : < > ? / \ | . If you use these characters, the file may fail to sync or be renamed automatically.

Will disabling AutoSave fix all my OneDrive sync issues?

Disabling 'AutoSave by default' stops Excel from constantly pushing background saves that might trigger renaming bugs. However, you will need to manually click the Save button or press Cmd+S to ensure your latest changes are backed up to the cloud.

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