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Fix Excel Data Changing or Corrupting After Reopening
Question details
Values in several Excel workbooks change or become jumbled after saving, closing, and reopening the files.
- Product
- Microsoft Excel
- Device & OS
- not provided
- Scenario
- Saving and reopening simple Excel workbooks that contain text and numeric data without formulas or external links.
- Observed behavior
- Data values are altered, scrambled, or corrupted upon reopening the file, and standard repair methods fail to resolve the problem.
Before proceeding, create backup copies of your affected workbooks and save them to a local offline folder to rule out active synchronization conflicts during troubleshooting.
Disable COM Add-ins in Safe Mode
Third-party add-ins often conflict with Excel's file-saving processes. Starting in Safe Mode and disabling them can identify the culprit.
COM Add-ins are external plugins that add features to Excel but can sometimes interfere with core processes like saving files. Disabling them is the most common fix for data scrambles.
Press and hold the 'Ctrl' key while clicking the Excel shortcut, or press 'Win + R', type 'excel /safe', and hit Enter.
Navigate to 'File' in the top ribbon, select 'Options', and click on 'Add-ins' in the left-hand menu.
At the bottom of the window, locate the 'Manage' dropdown menu, select 'COM Add-ins', and click the 'Go' button.
Uncheck all the listed add-ins to disable them temporarily, then click 'OK'. Restart Excel normally and test saving your file.
Test Storage and Synchronization Conflicts
Cloud storage sync services or faulty network drives can scramble file data during the writing process.
Reset Office Settings in the Registry
If the issue persists, resetting Excel's registry keys can resolve deep-rooted configuration corruptions.
Switch to WPS Office for Reliable Spreadsheet Management
If Microsoft Excel continues to corrupt or jumble your data during the save process, consider using WPS Office. It provides highly compatible, stable, and lightweight spreadsheet tools that securely save and manage your data without complicated registry fixes.
- 1. Download WPS Office: Visit the official WPS website to download and install WPS Office for free.
- 2. Open WPS Spreadsheets: Launch the WPS Spreadsheets module from your desktop or start menu.
- 3. Edit Your Workbooks Safely: Click 'Open', select your Excel files, and enjoy a stable editing and saving experience.
Frequently Asked Questions
Why does my Excel data change after saving and reopening?
This issue is most frequently caused by conflicting third-party COM add-ins disrupting the save process, aggressive cloud synchronization scrambling the file while writing, or corrupted Office registry configuration files.
Will I lose my spreadsheet formulas if I disable COM Add-ins?
No. Disabling COM Add-ins only turns off external plugins or extensions. Your spreadsheet data, standard formulas, and native Excel features will remain completely intact.
How can I recover Excel data that is already jumbled?
If the data is already saved in a corrupted state, you will need to restore a previous version. You can do this by right-clicking the file in Windows Explorer and selecting 'Restore previous versions', or by accessing the version history through your cloud storage provider.
Can malicious macros cause my cell values to change?
Yes, macro viruses or poorly coded VBA scripts can alter cell values upon saving or opening. Ensure your macro security settings in Excel are set to 'Disable all macros with notification' and avoid enabling macros from unknown sources.
