撤销工作表保护密码

　　我们在使用excel工作表的时候可能都使用过保护功能，这样就可以把工作表用密码保护起来，防止别人来进行修改，但是这样可能没有办法进行一些特殊操作，时间长了还可能忘记密码，这要怎么办?如何撤销工作表保护密码?下面就来介绍一下。
　　撤销工作表保护密码方法：
　　2007版Excel表格中可以按照以下方式建宏：
　　1、打开Excel表格中的Excel选项，选择自定义，得到如下画面：
　　2、然后在左边侧框栏中选择“查看宏”之后双击或者选择添加按钮，则可以看到右边栏中有了查看宏按钮，之后点击右下角的确定。
　　3、大家可以在下面这个窗口处看到箭头所指的按钮：点击按钮，之后弹出窗口：
　　4、在宏名处填写一个名字(可随意)，然后点击创建，弹出以下窗口：
　　5、将窗口内的内容全选后删除，然后将下面分割线以内的内容开始复制粘贴在上面的窗口内：
　　撤销工作表保护密码从横线下开始复制
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　　Option Explicit
　　Public Sub AllInternalPasswords()
　　' Breaks worksheet and workbook structure passwords. Bob McCormick
　　' probably originator of base code algorithm modified for coverage
　　' of workbook structure / windows passwords and for multiple passwords
　　'
　　' Norman Harker and JE McGimpsey 27-Dec-2002 (Version 1.1)
　　' Modified 2003-Apr-04 by JEM: All msgs to constants, and
　　' eliminate one Exit Sub (Version 1.1.1)
　　' Reveals hashed passwords NOT original passwords
　　Const DBLSPACE As String = vbNewLine & vbNewLine
　　Const AUTHORS As String = DBLSPACE & vbNewLine & _
　　＂Adapted from Bob McCormick base code by＂ & _
　　＂Norman Harker and JE McGimpsey＂
　　Const HEADER As String = ＂AllInternalPasswords User Message＂
　　Const VERSION As String = DBLSPACE & ＂Version 1.1.1 2003-Apr-04＂
　　Const REPBACK As String = DBLSPACE & ＂Please report failure ＂ & _
　　＂to the microsoft.public.excel.programming newsgroup.＂
　　Const ALLCLEAR As String = DBLSPACE & ＂The workbook should ＂ & _
　　＂now be free of all password protection, so make sure you:＂ & _
　　DBLSPACE & ＂SAVE IT NOW!＂ & DBLSPACE & ＂and also＂ & _
　　DBLSPACE & ＂BACKUP!, BACKUP!!, BACKUP!!!＂ & _
　　DBLSPACE & ＂Also, remember that the password was ＂ & _
　　＂put there for a reason. Don't stuff up crucial formulas ＂ & _
　　＂or data.＂ & DBLSPACE & ＂Access and use of some data ＂ & _
　　＂may be an offense. If in doubt, don't.＂
　　Const MSGNOPWORDS1 As String = ＂There were no passwords on ＂ & _
　　＂sheets, or workbook structure or windows.＂ & AUTHORS & VERSION
　　Const MSGNOPWORDS2 As String = ＂There was no protection to ＂ & _
　　＂workbook structure or windows.＂ & DBLSPACE & _
　　＂Proceeding to unprotect sheets.＂ & AUTHORS & VERSION
　　Const MSGTAKETIME As String = ＂After pressing OK button this ＂ & _
　　＂will take some time.＂ & DBLSPACE & ＂Amount of time ＂ & _
　　＂depends on how many different passwords, the ＂ & _
　　＂passwords, and your computer's specification.＂ & DBLSPACE & _
　　＂Just be patient! Make me a coffee!＂ & AUTHORS & VERSION
　　Const MSGPWORDFOUND1 As String = ＂You had a Worksheet ＂ & _
　　＂Structure or Windows Password set.＂ & DBLSPACE & _
　　＂The password found was: ＂ & DBLSPACE & ＂$$＂ & DBLSPACE & _
　　＂Note it down for potential future use in other workbooks by ＂ & _
　　＂the same person who set this password.＂ & DBLSPACE & _
　　＂Now to check and clear other passwords.＂ & AUTHORS & VERSION
　　Const MSGPWORDFOUND2 As String = ＂You had a Worksheet ＂ & _
　　＂password set.＂ & DBLSPACE & ＂The password found was: ＂ & _
　　DBLSPACE & ＂$$＂ & DBLSPACE & ＂Note it down for potential ＂ & _
　　＂future use in other workbooks by same person who ＂ & _
　　＂set this password.＂ & DBLSPACE & ＂Now to check and clear ＂ & _
　　＂other passwords.＂ & AUTHORS & VERSION
　　Const MSGONLYONE As String = ＂Only structure / windows ＂ & _
　　＂protected with the password that was just found.＂ & _
　　ALLCLEAR & AUTHORS & VERSION & REPBACK
　　Dim w1 As Worksheet, w2 As Worksheet
　　Dim i As Integer, j As Integer, k As Integer, l As Integer
　　Dim m As Integer, n As Integer, i1 As Integer, i2 As Integer
　　Dim i3 As Integer, i4 As Integer, i5 As Integer, i6 As Integer
　　Dim PWord1 As String
　　Dim ShTag As Boolean, WinTag As Boolean
　　Application.ScreenUpdating = False
　　With ActiveWorkbook
　　WinTag = .ProtectStructure Or .ProtectWindows
　　End With
　　ShTag = False
　　For Each w1 In Worksheets
　　ShTag = ShTag Or w1.ProtectContents
　　Next w1
　　If Not ShTag And Not WinTag Then
　　MsgBox MSGNOPWORDS1, vbInformation, HEADER
　　Exit Sub
　　End If
　　MsgBox MSGTAKETIME, vbInformation, HEADER
　　If Not WinTag Then
　　MsgBox MSGNOPWORDS2, vbInformation, HEADER
　　Else
　　On Error Resume Next
　　Do 'dummy do loop
　　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
　　With ActiveWorkbook
　　.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)
　　If .ProtectStructure = False And _
　　.ProtectWindows = False Then
　　PWord1 = Chr(i) & Chr(j) & Chr(k) & Chr(l) & _
　　Chr(m) & Chr(i1) & Chr(i2) & Chr(i3) & _
　　Chr(i4) & Chr(i5) & Chr(i6) & Chr(n)
　　MsgBox Application.Substitute(MSGPWORDFOUND1, _
　　＂$$＂, PWord1), vbInformation, HEADER
　　Exit Do 'Bypass all for...nexts
　　End If
　　End With
　　Next: Next: Next: Next: Next: Next
　　Next: Next: Next: Next: Next: Next
　　Loop Until True
　　On Error GoTo 0
　　End If
　　If WinTag And Not ShTag Then
　　MsgBox MSGONLYONE, vbInformation, HEADER
　　Exit Sub
　　End If
　　On Error Resume Next
　　For Each w1 In Worksheets
　　'Attempt clearance with PWord1
　　w1.Unprotect PWord1
　　Next w1
　　On Error GoTo 0
　　ShTag = False
　　For Each w1 In Worksheets
　　'Checks for all clear ShTag triggered to 1 if not.
　　ShTag = ShTag Or w1.ProtectContents
　　Next w1
　　If ShTag Then
　　For Each w1 In Worksheets
　　With w1
　　If .ProtectContents Then
　　On Error Resume Next
　　Do 'Dummy do loop
　　For i = 65 To 66: For j = 65 To 66: For k = 65 To 66
　　For l = 65 To 66: For m = 65 To 66: For i1 = 65 To 66
　　For i2 = 65 To 66: For i3 = 65 To 66: For i4 = 65 To 66
　　For i5 = 65 To 66: For i6 = 65 To 66: For n = 32 To 126
　　.Unprotect Chr(i) & Chr(j) & Chr(k) & _
　　Chr(l) & Chr(m) & Chr(i1) & Chr(i2) & Chr(i3) & _
　　Chr(i4) & Chr(i5) & Chr(i6) & Chr(n)
　　If Not .ProtectContents Then
　　PWord1 = Chr(i) & Chr(j) & Chr(k) & Chr(l) & _
　　Chr(m) & Chr(i1) & Chr(i2) & Chr(i3) & _
　　Chr(i4) & Chr(i5) & Chr(i6) & Chr(n)
　　MsgBox Application.Substitute(MSGPWORDFOUND2, _
　　＂$$＂, PWord1), vbInformation, HEADER
　　'leverage finding Pword by trying on other sheets
　　For Each w2 In Worksheets
　　w2.Unprotect PWord1
　　Next w2
　　Exit Do 'Bypass all for...nexts
　　End If
　　Next: Next: Next: Next: Next: Next
　　Next: Next: Next: Next: Next: Next
　　Loop Until True
　　On Error GoTo 0
　　End If
　　End With
　　Next w1
　　End If
　　MsgBox ALLCLEAR & AUTHORS & VERSION & REPBACK, vbInformation, HEADER
　　End Sub
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　　复制到横线以上
　　得到情况如下图表示
　　6、关闭编辑窗口;
　　7、依次点击菜单栏上的工具---宏-----宏,选AllInternalPasswords,运行,确定两次;
　　等一会,就会出现以下对话框：这就是Excel密码对应的原始密码(此密码和原先设置的密码都能打开此文档。如果是别人的文档，你又想恢复密码设置，就可以用此密码进行保护，他就能用他设置的密码打开，你可以试试，很有趣的。字母一定要大写)：
　　再点击确定。Excel的原始密码就被清除了!!
　　8、最后记得关闭EXCEL文档时要保存，否则下回打开，文档仍旧处于只读状态而无法修改。
　　以上就是有关撤销工作表保护密码的方法介绍，如果大家遇到这种问题，不妨参考本文尝试解决。