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How to Fix Excel Files That Cannot Open After Being Used on an iPhone
Question details
The user is unable to open Excel spreadsheet files on a Mac or other devices after opening or saving them on an iPhone.
- Product
- Microsoft Excel
- Device & OS
- iPhone, Mac
- Scenario
- Attempting to open a spreadsheet that was recently accessed, edited, or synced using an iOS device.
- Observed behavior
- The Excel file becomes unreadable, triggering an error message that states the file format or file extension is invalid.
Create a secure backup copy of the unreadable Excel file and save it to a separate folder before attempting any format changes or recovery steps.
Verify and Fix the File Extension
Ensure the file has the correct extension, as cross-device transfers can sometimes alter or hide file types, preventing them from opening.
When transferring files between iOS and macOS, the file extension can sometimes be dropped or modified. Restoring the correct .xlsx extension helps the system recognize the file format.
Open Finder on your Mac and navigate to the folder containing the unreadable Excel file.
Right-click the file and select 'Get Info'. Look under the 'Name & Extension' section to see if the file ends in .xlsx.
If the extension is missing or incorrect (e.g., .xls instead of .xlsx), manually type '.xlsx' at the end of the file name and press Enter.
Click 'Use .xlsx' when prompted by macOS to confirm the extension change. Try opening the file again in Excel.
Open the File Using Excel for the Web or an Alternative App
Bypass local device compatibility issues by opening the corrupted file in a web-based or alternative spreadsheet application.
Restore the File from Time Machine or Cloud Version History
If the file is severely corrupted from the iPhone sync, reverting to a previously saved working version is the safest recovery method.
Use WPS Office for Seamless Cross-Platform Spreadsheet Editing
Tired of file corruption and extension errors when switching between your iPhone and Mac? WPS Office offers a highly compatible alternative to Microsoft Office. It seamlessly syncs your spreadsheets across mobile and desktop without losing data or messing up file formats.
- 1. Download and Install WPS Office: Visit the official WPS website to download the free application for your Mac or install the iOS app from the App Store.
- 2. Open the affected spreadsheet: Launch WPS Spreadsheets, click on 'Open', and select your problematic .xlsx file. WPS is highly resilient to minor format corruptions.
- 3. Save and sync safely: Once opened, save the file directly to WPS Cloud to ensure smooth, error-free syncing between your Mac and iPhone in the future.
Frequently Asked Questions
Why do Excel files get corrupted when transferred from an iPhone?
Files can become unreadable due to incomplete cloud synchronizations, interruptions during the save process on the iOS app, or minor compatibility bugs between different versions of Microsoft 365 on mobile and desktop.
How can I check if the Excel app on my Mac is causing the issue?
You can try opening Excel in Safe Mode on your Mac. Close Excel completely, hold down the Option key, and click the Excel icon to open it. This bypasses add-ins and custom settings that might be conflicting with the file.
What should I do if fixing the file extension doesn't work?
If altering the extension to .xlsx doesn't resolve the issue, upload the file to a cloud service like OneDrive to open it in a web browser, or restore an older, uncorrupted version from your Mac's Time Machine backup.
