Kutools For — Excel Password

Changing the file extension of a .xlsx file to .zip allows you to edit the workbook.xml or sheet.xml files to remove the tag manually. For "File Open" Encryption

Before using any third-party tool to batch-encrypt or batch-decrypt files, make a backup copy of your original folder. If a system glitch occurs mid-process, your data remains safe.

Using these tools is straightforward. Here is how to navigate the most common password operations using Kutools. How to Password Protect Multiple Excel Files at Once kutools for excel password

Unprotect Worksheet

: Kutools is a productivity add-in and is not a "password cracker." You must know the current password to decrypt or unprotect files. Changing the file extension of a

Cause: One of the files in the batch is corrupted. Fix: Run the batch in smaller groups (10 files at a time) to isolate the problematic file.

[Official ExtendOffice Link] Related Reading: “Top 10 Excel Add-ins for 2025” | “How to Audit Your Excel Security Settings” Using these tools is straightforward

Handling 50+ files at once instead of one by one.