File Sharing Problems

How to Fix Excel Digital Signature Errors in Shared SharePoint Files

Maira Mehtab Sep 22, 2026 868 views

Question details

The user needs to resolve an issue where a shared Excel workbook cannot be saved in SharePoint due to alleged digital signature changes, even though no signatures are visible.

Product: Microsoft Excel
Device & OS: not provided
Scenario: Saving a shared workbook hosted on SharePoint.
Observed behavior: Excel displays an error message stating the file cannot be saved because of digital signature changes, blocking the save process.

Before you start

Ensure you are connected to the internet to sync with SharePoint and verify that you have edit permissions for the folder where the workbook is stored.

Solution 1Recommended

Remove Visible Digital Signatures

Check for and remove any existing digital signatures that might be conflicting with SharePoint's sharing features.

Access File Information

Click on the 'File' tab in the top-left corner of the Excel ribbon, then select 'Info' from the left-hand menu.

Open Signatures Pane

Look for the 'View Signatures' button or option in the Info section and click it to open the Signatures pane on the right side of your screen.

Remove Signatures

If any signatures are listed in the pane, click the arrow next to the signature and select 'Remove Signature'. Once cleared, attempt to save the workbook again.

Solution 2

Save a Copy to Clear Hidden Metadata

If no signatures are visible, saving a new copy of the file will strip away hidden signature metadata causing the error.

Free Microsoft Office alternative

Switch to WPS Office for a Smoother Spreadsheet Experience

If you frequently encounter metadata glitches or file saving errors with Microsoft Excel, consider switching to WPS Office. It provides a lightweight, highly compatible alternative for seamless editing and sharing without the frustrating background errors.

1. Download and Install: Visit the official WPS website to download the free installation package and follow the prompts to install it on your device.
2. Open Your Workbook: Launch WPS Spreadsheet and click 'Open' to select your problematic Excel file.
3. Edit and Save Seamlessly: Make your necessary edits and save the file without being blocked by hidden signature metadata.

Fully compatible with Microsoft Excel formats including .xlsx, .xls, and .csv.Lightweight architecture for faster loading and smoother file handling.Intuitive, easy-to-navigate interface that feels instantly familiar.Built-in PDF creation and secure document signing tools without metadata conflicts.

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Frequently Asked Questions

Why does Excel show a digital signature error when there are no signatures visible?

This happens when digital signature metadata remains embedded in the file's background code. This can occur if a signature was improperly removed, if the file was created from a signed template, or if it contains signed macros.

Does adding a digital signature prevent co-authoring in SharePoint?

Yes. By design, applying a digital signature to a Microsoft Office document makes it read-only to protect the integrity of the signed data. This automatically disables real-time co-authoring features in SharePoint.

How can I securely sign a shared document without breaking SharePoint saving?

The best practice is to finalize all collaborative edits in the shared Excel file first. Once the content is final, export the workbook as a PDF and apply your digital signature to the PDF version.

Document & File Issues