Fix Excel Opening or Linking to Unopened Workbooks After Update
Question details
Users need to resolve an issue where Excel creates unexpected external links or runs multiple background processes after a recent Microsoft update.

- Product
- Microsoft Excel
- Device & OS
- Windows
- Scenario
- Opening a single Excel workbook after a Windows or Office update.
- Observed behavior
- Excel appears to pull data from unopened workbooks, creates phantom links, and spawns multiple redundant Excel.exe processes in the Task Manager.
Ensure you save copies of your affected workbooks and note down your current Windows and Office version numbers by pressing Windows Key + R, typing 'winver', and pressing Enter.
Verify Task Manager Processes and Windows Version
Use Task Manager to identify if Excel is bugged and running multiple instances for a single open file.
Following certain Microsoft updates, Excel may incorrectly isolate single workbooks into multiple background processes. Identifying this behavior helps confirm if the update caused the compatibility issue.
Press Ctrl + Shift + Esc on your keyboard to launch the Windows Task Manager.
Scroll down to the 'Background processes' or 'Apps' section and look for multiple instances of 'Microsoft Excel' when only one workbook is actively open.
Right-click any extra Excel processes and select 'End task' to force them to close, then check if your primary workbook stops trying to link to unopened files.

Find and Break Unexpected External Links
Manually identify and remove phantom links that Excel may have automatically generated after the update.
Disable Faulty Excel Add-ins
Third-party add-ins often break after an Office update, causing erratic background behavior and ghost linking.
Avoid Excel Update Bugs with WPS Office
If Microsoft Excel updates continue to cause ghost links and background process errors, switch to WPS Office. It provides a highly stable, lightweight environment that is fully compatible with your existing Excel files.
- 1. Download and Install: Get the free WPS Office suite from the official website and install it on your PC.
- 2. Open Your Workbook: Right-click your problematic Excel file, choose 'Open with', and select WPS Spreadsheets.
- 3. Edit Without Errors: Enjoy seamless data editing without unexpected background linking or multiple process bugs.

Frequently Asked Questions
Why does Excel show multiple processes in Task Manager for one workbook?
This often happens after a system update if Excel's configuration is corrupted to force files into separate background instances, or if an outdated COM add-in is running invisibly in the background.
How can I find hidden links to unopened workbooks in my sheets?
Navigate to the Data tab and click 'Edit Links'. Alternatively, you can use the Find feature (Ctrl + F) to search for the left bracket symbol '[', which typically indicates a formula is referencing an external workbook.
Will rolling back the Microsoft Office update fix this linking issue?
Yes. If the multiple processes and phantom links started immediately after a recent update, reverting to the previous Office build using the Office Deployment Tool can act as a temporary workaround until Microsoft releases a patch.
Can I use WPS Office to check and fix corrupted Excel files?
Yes, opening the affected .xlsx file in WPS Spreadsheets can help you bypass Microsoft-specific background bugs, allowing you to cleanly review the data and safely remove broken external links.




