This will disable Copy / Paste, load on Workbook open:

'///
Sub DisablePaste()
EnableControl 21, False ' cut
EnableControl 19, False ' copy
EnableControl 22, False ' paste
EnableControl 755, False ' pastespecial
Application.OnKey "^c", "Message"
Application.OnKey "^v", "Message"
Application.OnKey "+{DEL}", "Message"
Application.OnKey "+{INSERT}", "Message"
Application.CellDragAndDrop = False
Application.OnDoubleClick = "Message"
CommandBars("ToolBar List").Enabled = False
End Sub
'///


Load on Workbook Close

'///
Sub EnablePaste()
EnableControl 21, True ' cut
EnableControl 19, True ' copy
EnableControl 22, True ' paste
EnableControl 755, True ' pastespecial
Application.OnKey "^c"
Application.OnKey "^v"
Application.OnKey "+{DEL}"
Application.OnKey "+{INSERT}"
Application.CellDragAndDrop = True
Application.OnDoubleClick = ""
CommandBars("ToolBar List").Enabled = True
End Sub
'///




Sub Message()
'// NoGo
MsgBox "Sorry command not Available!" & vbCrLf & _
"Cannot Paste or ''drag & drop''.", 16, "on any Scope Sheets in this
workbook:"
End Sub





sir Lancelot wrote:

Can users be prevented from using the copy or paste function in shared
workbooks. I have several cells in workbooks that contain data validation.
I want to prevent other users from overriding the validation. Can this be
done? The workbooks are protected and shared but the worksheets are not.

--
Thanks & Regards,

Jerry