Perhaps have your server administrator set Deny Delete permission on the
folder the file resides in.

sue@solotel wrote:

hi can anyone tell me a way to stop a user of one of my spreadsheets from
changing the file extension, deleting the file or moving it elsewhere within
our drives? my sheets are used by many poeple and added to daily but it seems
someone has been careless and accidentally deleted some vital sheets any help
would be greatly appreciated