Prevent deleting of sheets in Excel
For example, I have a complex WorkBook with hidden Sheets, formulas involving multiple Sheets. I want to prevent users from adding or removing Sheets or hiding or unhiding Sheets.
To do it in Excel, here is the answer:
a) Click on "Info" under "File". Click on "Protect WorkBook Structure" under "Protect WorkBook".
b) In the "Protect Structure and Windows" dialog box, check "Structure" option and enter Password. Re-enter Password. Click OK.
The WorkBook structure is protected and cannot be changed without the Password.
Note: Select the Windows option if you want to prevent users from moving, resizing, or closing the WorkBook window, or hide/unhide windows.