How to Fix Excel Deleting Waterfall Charts After Saving and Reopening
Question details
Users experience an issue where Excel reports an unreadable content error and automatically removes waterfall charts when a previously saved file is reopened.

- Product
- Microsoft Excel
- Device & OS
- not provided
- Scenario
- Saving and subsequently reopening an Excel workbook that contains a waterfall chart.
- Observed behavior
- Excel displays an 'unreadable content' warning message and permanently deletes the waterfall charts from the spreadsheet upon reopening the file.
Before proceeding with any repairs or troubleshooting steps, create a backup copy of your original Excel workbook to prevent permanent data loss during the recovery process.
Test with a Clean Workbook and Safe Mode
Determine if the issue is caused by specific file corruption, active macros, or conflicting Excel add-ins by isolating the environment.
By testing a fresh file and launching Excel without background add-ins, you can quickly identify whether the error stems from the workbook itself or a system configuration problem.
Open Excel, create a new blank workbook, and insert a simple waterfall chart using generic, basic data (do not copy and paste from the corrupted file).
Save this new workbook and reopen it. If the chart remains intact, your original file is likely corrupted.
Press 'Windows + R' on your keyboard to open the Windows Run dialog box.
Type 'excel /safe' into the text field and press Enter to launch Microsoft Excel in Safe Mode, which disables all third-party add-ins.
Open your original problematic workbook in Safe Mode to see if the waterfall chart is retained without the unreadable content error.

Repair Microsoft Office Online
Fix corrupted Office installation files that might be causing charting components to crash and delete elements.
Save as a Macro-Free Workbook
Eliminate conflicts caused by poorly written VBA macros by saving the file in the standard XLSX format.
Try WPS Office to Create and View Waterfall Charts Flawlessly
If Microsoft Excel continues to report unreadable content and corrupt your waterfall charts, WPS Office offers a free, highly compatible alternative. Enjoy seamless chart creation, a familiar user interface, and robust stability without worrying about sudden file corruption.
- 1. Download and Install: Get WPS Office for free from the official website and install it on your PC or Mac.
- 2. Open Your Workbook: Launch WPS Spreadsheet and open the .xlsx file containing your waterfall chart data.
- 3. Insert Waterfall Chart: Select your data range, navigate to the 'Insert' tab, click 'Chart', and choose the Waterfall chart type to visualize your data without errors.

Frequently Asked Questions
Why does Excel say my file has 'unreadable content'?
This error usually indicates that the underlying XML structure of the Excel file has become corrupted. For charts, this often happens due to conflicting macros, unsupported complex formatting, incomplete save processes, or software bugs in your specific version of Microsoft 365.
Can I recover the waterfall chart after Excel deletes it during a repair?
Unfortunately, no. Once Excel automatically 'repairs' the file by removing the unreadable content, the chart is permanently deleted from that saved version. You will need to recreate the chart from the data or restore the file from a previous backup or version history.
Are waterfall charts supported in older versions of Excel?
Waterfall charts were introduced natively in Excel 2016. If you attempt to open a workbook containing a waterfall chart in an older version like Excel 2013 or 2010, the chart will not display correctly and might trigger compatibility or unreadable content errors.
Does saving as .xlsm cause issues with visualization charts?
While .xlsm is the standard, supported format for macro-enabled workbooks, conflicting VBA code can sometimes corrupt chart objects upon saving. Testing your data by saving it as a macro-free .xlsx file helps identify if a VBA script is the root cause of the missing charts.




