See

http://www.mcgimpsey.com/excel/removepwords.html

there are other posts on this topic and other options

"Anto111" wrote:

Pretty basic question guys but I am trying to edit the name of my worksheets
in a workbook and it appears that sometime ago I must have protected the
workbook thus at present I cannot alter worksheet names.

How can I unprotect the workbook?

Cheers,

Ant