小林博客表格受密码保护时，我们修改相关公式或数据时 Excel 会弹出：
警告
您试图更改的单元格或图表位于受保护的工作表中。若要进行更改，请取消工作表保护。您可能需要输入密码。
Alert
The cell or chart you’re trying to change is on a protected sheet. To make a change, unprotect the sheet. You might be requested to enter a password.
这时候我们可以用 VBA 宏代码破解法来破解表格保护密码。
- 解除默认的 “宏禁用” 状态打开该文件，先解除默认的 “宏禁用” 状态，方法是点击工具栏下的 “选项” 状态按钮，打开 “Microsoft Office 安全选项” 窗口，选择其中的 “启用此内容”，“确定”。
- 添加并编辑宏。切换到 “视图” 选项卡，点击 “宏”→“录制宏”，出现 “录制新宏” 窗口，在 “宏名” 定义一个名称为 PasswordBreaker，点击 “确定” 退出；再点击 “宏”→“查看宏”，选择 “宏名” 下的 “PasswordBreaker” 并点击 “编辑”，打开 “Microsoft Visual Basic” 编辑器，用如下内容替换右侧窗口中的所有代码：
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Sub PasswordBreaker()
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Dim i As Integer, j As Integer, k As Integer
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Dim l As Integer, m As Integer, n As Integer
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Dim i1 As Integer, i2 As Integer, i3 As Integer
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Dim i4 As Integer, i5 As Integer, i6 As Integer
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On Error Resume Next
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For i = 65 To 66: For j = 65 To 66: For k = 65 To 66
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For l = 65 To 66: For m = 65 To 66: For i1 = 65 To 66
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For i2 = 65 To 66: For i3 = 65 To 66: For i4 = 65 To 66
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For i5 = 65 To 66: For i6 = 65 To 66: For n = 32 To 126
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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)
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If ActiveSheet.ProtectContents = False Then
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MsgBox "One usable password is " & Chr(i) & Chr(j) & Chr(k) & Chr(l) & Chr(m) & Chr(i1) & Chr(i2) & Chr(i3) & Chr(i4) & Chr(i5) & Chr(i6) & Chr(n)
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ActiveWorkbook.Sheets(1).Select
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Range("a1").FormulaR1C1 = Chr(i) & Chr(j) & Chr(k) & Chr(l) & Chr(m) & Chr(i1) & Chr(i2) & Chr(i3) & Chr(i4) & Chr(i5) & Chr(i6) & Chr(n)
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Exit Sub
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End If
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Next: Next: Next: Next: Next: Next
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Next: Next: Next: Next: Next: Next
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End Sub
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- 再点击 “宏”→“查看宏”，选择 “宏名” 下的 “PasswordBreaker” 并点击 “执行”，密码就现形了。
- 点击 “撤消工作表保护”，然后输入密码即可解除锁定。
测试结果，密码破解可用。
