Cause: This usually means the sheet uses an older Excel protection schema (Excel 97-2003). Fix: Save the file as a modern .xlsx or .xlsm format, then retry Kutools.
It offers a no-coding solution to automatically fill and open protected files, saving users from repetitive manual entry. How it Differs from Native Excel Protection kutools for excel password
Click to apply the protection across all selected documents. Standard Excel vs. Kutools Standard Excel Kutools for Excel Individual File Protection Yes (File > Info) Batch File Protection Yes (Folders & OneDrive) Worksheet Protection Yes (Review tab) Enhanced via Kutools Plus Complexity Manual for each file Automated for many files Cause: This usually means the sheet uses an
Kutools does not crack complex encryption. Instead, it removes the protection flag from the worksheet or workbook structure. It doesn’t need the original password—it overwrites the attribute that tells Excel, “This sheet is locked.” How it Differs from Native Excel Protection Click