Describes the cause and action for error messages.
error workbook is protected and cannot be changed
Unprotecting an Excel workbook when the password is not known
Allow Users to Change Cells in Protected Excel Worksheet - YouTube
How to remove a password from a protected worksheet or workbook in ...
How do I avoid run-time error when a worksheet is protected in MS ...
Run time error '1004' - Workbook protected - Stack Overflow
Allow Changes on a Protected Worksheet ? Contextures Blog
Add or remove protection in your document, workbook, or presentation ...