Hướng dẫn mở khóa file excel bằng mã

Sub PasswordBreaker()

If ActiveSheet.ProtectContents = False Then

    MsgBox "Sheet '" & ActiveSheet.Name & "' is unprotected!", vbInformation

Else

    If MsgBox("Sheet '" & ActiveSheet.Name & "' is protected, do you want michael1112 to unprotect it?", _

    vbYesNo + vbQuestion, "Unprotect Active Sheet") = vbNo Then Exit Sub

    Dim i As Integer, j As Integer, k As Integer

    Dim l As Integer, m As Integer, n As Integer

    Dim i1 As Integer, i2 As Integer, i3 As Integer

    Dim i4 As Integer, i5 As Integer, i6 As Integer

    On Error Resume Next

    For i = 65 To 66: For j = 65 To 66: For k = 65 To 66

    For l = 65 To 66: For m = 65 To 66: For i1 = 65 To 66

    For i2 = 65 To 66: For i3 = 65 To 66: For i4 = 65 To 66

    For i5 = 65 To 66: For i6 = 65 To 66: For n = 32 To 126

        ActiveSheet.Unprotect Chr(i) & Chr(j) & Chr(k) & _

        Chr(l) & Chr(m) & Chr(i1) & Chr(i2) & Chr(i3) & _

        Chr(i4) & Chr(i5) & Chr(i6) & Chr(n)

    Next: Next: Next: Next: Next: Next

    Next: Next: Next: Next: Next: Next

    If ActiveSheet.ProtectContents = False Then MsgBox "Sheet '" & ActiveSheet.Name & "' is unprotected!", vbInformation

End If

End Sub