'=>adapter le nom du chemin et du dossier
Const cStartFolder = "C:\Documents and Settings\Staple\NomDossierAvecClasseursADéprotéger"
Const cFileFilter = "*.xlsx"
Const cPassword = "motdepasse " '<= mot de passe à adapter
Sub UnprotectAllWorksheets()
Dim i As Long, j As Long, arr() As String, wkb As Workbook, wks As Worksheet
ExtractFolder cStartFolder, arr()
On Error Resume Next
j = -1: j = UBound(arr)
On Error GoTo 0
For i = 0 To j
Set wkb = Workbooks.Open(arr(i), False)
For Each wks In wkb.Worksheets
wks.Unprotect cPassword
Next
wkb.Save
wkb.Close
Next
End Sub
Sub ExtractFolder(Folder As String, arr() As String)
Dim i As Long, objFS As Object, objFolder As Object, obj As Object
Set objFS = CreateObject("Scripting.FileSystemObject")
Set objFolder = objFS.GetFolder(Folder)
For Each obj In objFolder.SubFolders
ExtractFolder obj.Path, arr()
Next
For Each obj In objFolder.Files
If obj.Name Like cFileFilter Then
On Error Resume Next
i = 0: i = UBound(arr) + 1
On Error GoTo 0
ReDim Preserve arr(i)
arr(i) = objFolder.Path & Application.PathSeparator & obj.Name
End If
Next
End Sub