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How to Fix Excel Files Missing or Not Opening After a Windows Upgrade
Question details
The user is unable to find or open their Excel workbooks following a recent Windows operating system upgrade.
- Product
- Microsoft Excel
- Device & OS
- Windows
- Scenario
- Trying to locate and access existing spreadsheets immediately after upgrading or updating the Windows operating system.
- Observed behavior
- Excel files are either missing from their original folders, fail to open when double-clicked due to broken associations, or open to a blank application screen.
Before proceeding, restart your computer to ensure all background Windows upgrade processes are fully complete, and check your Recycle Bin in case any shortcuts or files were accidentally deleted during the transition.
Restore Excel File Associations
Re-link your spreadsheet files to the Excel application if they open in the wrong program or prompt you to choose an app.
Major Windows updates can occasionally reset default app preferences. Restoring the file association tells Windows to always use Excel to open your spreadsheet files.
Press the Windows key + E on your keyboard to open File Explorer and navigate to the folder where an Excel file is saved.
Right-click on any .xlsx or .xls file, hover over 'Open with', and select 'Choose another app'.
Click on 'Excel' in the list of available applications. If it is not immediately visible, scroll down and click 'More apps'.
Check the box at the bottom that says 'Always use this app to open .xlsx files' (or similar wording depending on your Windows version), then click OK.
Search for Missing Files and Check Old User Profiles
Find files that may have been hidden, moved to a temporary user profile, or remain unsynced on OneDrive after the OS upgrade.
Repair Your Microsoft 365 or Office Installation
Run the built-in Office repair tool to fix corrupted software registry keys and components caused by the Windows update.
Use WPS Office to Open Your Spreadsheets Seamlessly
If your Microsoft Office installation is corrupted or missing after a Windows upgrade, WPS Office provides a free, lightweight, and highly compatible alternative. You can instantly open, edit, and save all your Excel workbooks without going through complex troubleshooting or reinstalling bulky software.
- 1. Download and Install: Download WPS Office Free from the official website and follow the quick installation prompts.
- 2. Open the Spreadsheets Module: Launch WPS Office and click on 'Spreadsheets' from the main dashboard.
- 3. Open Your Files: Click 'Open' to browse your computer and seamlessly load your existing .xlsx or .xls workbooks.
Frequently Asked Questions
Why are my Excel files opening as a blank gray screen after a Windows update?
This commonly happens if the Dynamic Data Exchange (DDE) setting is enabled or if file associations were disrupted during the update. Re-establishing the default app in File Explorer or turning off DDE in Excel's Advanced Options usually resolves it.
Does upgrading Windows delete my personal desktop files?
No, a standard Windows upgrade is designed to keep your personal files intact. If they appear missing, Windows may have temporarily moved them to a 'Windows.old' folder on your C: drive, or you might be logged into a temporary user profile.
How can I recover an unsaved Excel file after Windows unexpectedly restarted for an update?
Open Excel, click on 'File' > 'Open' > 'Recent', and scroll to the bottom of the list. Click 'Recover Unsaved Workbooks' to check if Excel created an AutoRecover draft before the restart.
