I have a file that is on a shared drive that multiple users use. The file is
not saved as a shared workbook. The file is password protected and all users
know the password. Is there a way to prevent users from changing the password
when they are re-protecting the workbook after they have made changes?

I also have found that if I protect a workbook some one who has the password
can then protect and share the work book putting a new password over mine
thus not allowing me to edit the workbook. Is there any way to restrict users
from doing this?