Excel Error Codes

How to Fix Excel "File Could Not Be Found" Error When Opening a Workbook

Nimra MalikNimra Malik Oct 29, 2026 871 views

Question details

The user is experiencing a recurring error stating that a specific file cannot be found when opening an Excel workbook, even though the missing file was moved and supposedly has no relation or link to the current workbook.

How to Fix Excel "File Could Not Be Found" Error When Opening a Workbook
Product
Microsoft Excel
Device & OS
Windows
Scenario
Opening a specific Excel workbook after another seemingly unrelated file has been moved or deleted.
Observed behavior
Excel displays a "File Could Not Be Found" error message referencing the moved file every time the workbook is opened, likely due to hidden external links or cached references.
Before you start

Ensure that you have saved any open workbooks and completely closed all Microsoft Office applications before attempting to clear the system cache.

Solution 1Recommended

Clear the Office File Cache

Resolves persistent errors caused by outdated or corrupt cached references to moved files.

Microsoft Office maintains a background cache of files to improve performance. When a file is moved or deleted, the cache may still hold onto the old reference, triggering a "File Could Not Be Found" error even if the workbooks are not directly linked.

1
Sign out and close Office

Sign out of your Microsoft Office account and completely close all Office applications, including Excel and Word.

2
Navigate to the cache folder

Open Windows File Explorer and navigate to C:\Users\username\AppData\Local\Microsoft\Office\16.0\OfficeFileCache. Be sure to replace 'username' with your actual Windows username.

3
Delete cache contents

Select all files and folders within the OfficeFileCache directory and delete them to clear the outdated references.

4
Restart and test

Open Excel, sign back into your Microsoft account, and open the problematic workbook to verify the error is resolved.

Clear the Office File Cache
Hidden Folders: The AppData folder is hidden by default in Windows. To view it, click the 'View' tab in File Explorer and check the box for 'Hidden items'.
Free Microsoft Office alternative

Try WPS Office to Avoid Excel Cache and Link Errors

Frustrated by persistent "File Could Not Be Found" errors and complex cache issues in Microsoft Excel? WPS Office offers a lightweight, highly compatible alternative that processes spreadsheets efficiently without bloated background caches. It seamlessly opens your existing Excel files and provides a familiar interface so you can get right back to work.

  1. 1. Download WPS Office: Visit the official WPS website to download and install the free office suite.
  2. 2. Open your workbook: Launch WPS Spreadsheet and open your existing .xlsx file directly without worrying about legacy Office cache errors.
  3. 3. Manage links easily: Navigate to the Data tab in WPS Spreadsheet to view and manage any external links cleanly and efficiently.
Fully compatible with Microsoft Excel formats (.xls, .xlsx, .xlsm).Lightweight installation with no overly complex cache systems that cause phantom link errors.Familiar user interface that requires zero learning curve for Excel users.Built-in tools to easily manage, update, or break external workbook links.Free to download and use for your daily spreadsheet tasks.
microsoft office alternative - wps office

Frequently Asked Questions

Why does Excel say a file cannot be found when I haven't linked it?

Excel may have created a hidden reference automatically, such as in a copied named range, a data validation drop-down, or a conditional formatting rule. Alternatively, the Office File Cache might be holding onto an outdated background reference to a file you recently moved or deleted.

Where is the Office File Cache located on my computer?

For recent versions of Microsoft Office, the cache is typically located at C:\Users\username\AppData\Local\Microsoft\Office\16.0\OfficeFileCache. You will need to replace 'username' with your actual Windows username, and '16.0' might vary slightly depending on your specific Office version.

Will breaking an external link delete my spreadsheet data?

No, breaking an external link will not delete your data. It will simply convert any formulas that relied on the external file into their current static values, preventing Excel from trying to fetch new data from the missing file.