Step 1: Open the document to be signed

• Open Microsoft Excel.
• Create a new file or open an existing file to sign.

Step 2: Select File → Info.

Step 3: Select Protect Workbook.

Step 4: Select Add a Digital Signature.

Step 5: Verify that the displayed certificate is correct.

Step 6: If you want to change the certificate, select Change.

Step 7: Click Sign to start signing.

Step 8: The authentication waiting screen will appear.

Step 9: Open the VNeID application on your mobile device.

• Go to Notifications → Select Digital signing request.
• Check the information.
• Agree to the terms:
• “I have read and understood the purpose, rights, and obligations...”
• Click Confirm sharing.
• The app displays Information shared successfully.

Step 10: Complete the signing process

• “Signing completed successfully.”

Step 11: Check the signed document.

Step 12: View certificate details.

To view certificate details:

• Click the expand icon
• Select Signature Details
• Click View to see details
• Click OK to finish