How to Stop Excel Warnings About Potentially Unsafe External Links
Question details
The user wants to disable the warning messages that appear when an Excel workbook contains external links pointing to untrusted locations.

- Product
- Microsoft Excel
- Device & OS
- Windows, Mac
- Scenario
- Opening an Excel file that contains references to external files not stored in recognized trusted locations.
- Observed behavior
- Excel repeatedly displays a prompt asking the user whether to update potentially unsafe external links.
Ensure that the external links in your workbook point to safe, trusted sources before disabling these security warnings, as enabling automatic updates from unknown sources can pose a security risk.
Adjust Trust Center Settings in Windows Excel
Change the external content settings in Excel for Windows to manage or disable external link update prompts.
By modifying the Trust Center settings in Microsoft Excel for Windows, you can choose to automatically update links or completely disable the prompts for external content. This allows for a smoother experience when dealing with heavily linked workbooks.
Launch Microsoft Excel and click on the 'File' menu in the top-left corner. Then, select 'Options' located at the bottom of the left-hand menu.
In the Excel Options dialog box, select 'Trust Center' from the left pane, and then click on the 'Trust Center Settings...' button.
In the Trust Center window, click on 'External Content' in the left menu. Under 'Security settings for Workbook Links', select either 'Enable automatic update for all Workbook Links' (not recommended for unknown sources) or 'Disable automatic update of Workbook Links' based on your preference.
Click 'OK' to close the Trust Center dialog, and click 'OK' again to close the Excel Options. Your link update preferences are now applied.

Handling External Link Warnings on Mac
Understand the limitations regarding external link prompts in Excel for Mac and learn how to minimize them by using trusted locations.
Try WPS Office for Seamless Spreadsheet Management
If you are frustrated by platform limitations and constant security warnings in Microsoft Excel, consider switching to WPS Office. It provides a lightweight, highly compatible alternative for managing your spreadsheets across both Windows and Mac without unnecessary friction.
- 1. Download WPS Office: Visit the official WPS website and download the free installation package for your Windows or Mac device.
- 2. Open Your Spreadsheets: Launch WPS Spreadsheet and click 'Open' to locate your existing .xlsx workbooks containing external links.
- 3. Manage Data Easily: Continue editing your data with full compatibility and an intuitive interface that simplifies managing external file connections.

Frequently Asked Questions
Why does Excel keep asking me to update external links?
This is a built-in security measure. Excel warns you when a workbook contains links to files stored in locations it doesn't automatically trust, preventing potentially malicious data from updating automatically without your explicit consent.
Can I disable the update link prompt for all future files?
Yes, but only on Windows. You can manage this globally by going to File > Options > Trust Center > Trust Center Settings > External Content. On Mac, this global setting is not available due to macOS sandbox security restrictions.
Are external links safe to update automatically?
External links are safe to update only if you completely trust the source of the linked workbook. If you downloaded the file from the internet or received it from an unknown sender, you should manually verify the source before allowing updates.
How do I find which external links are triggering the warning?
Go to the 'Data' tab on the Excel ribbon and click on 'Edit Links'. This dialog box will display a list of all external sources referenced in your current workbook, allowing you to update, break, or change the source files.




