Sub BulkFindReplace()
Application.ScreenUpdating = True
Dim strFolder As String, strFile As String, wdDoc As Document
Dim StrWkBkNm As String, StrWkSht As String
Dim xlApp As Object, xlWkBk As Object, xlWkSht As Object
Dim bStrt As Boolean, bFound As Boolean, lRow As Long, i As Long
StrWkBkNm = "C:\Users\" & Environ("Username") & "\Documents\Workbook Name.xls"
StrWkSht = "Sheet1"
If Dir(StrWkBkNm) = "" Then
  MsgBox "Cannot find the designated workbook: " & StrWkBkNm, vbExclamation
  Exit Sub
End If
'Get the folder to process
strFolder = GetFolder
If strFolder = "" Then Exit Sub
strFile = Dir(strFolder & "\*.doc", vbNormal)
' Test whether Excel is already running.
On Error Resume Next
bStrt = False ' Flag to record if we start Excel, so we can close it later.
Set xlApp = GetObject(, "Excel.Application")
'Start Excel if it isn't running
If xlApp Is Nothing Then
  Set xlApp = CreateObject("Excel.Application")
  If xlApp Is Nothing Then
    MsgBox "Can't start Excel.", vbExclamation
    Exit Sub
  End If
  ' Record that we've started Excel.
  bStrt = True
End If
On Error GoTo 0
'Check if the workbook is open.
bFound = False
With xlApp
  'Hide our Excel session
  If bStrt = True Then .Visible = False
  For Each xlWkBk In .Workbooks
    If xlWkBk.FullName = StrWkBkNm Then ' It's open
      Set xlWkBk = xlWkBk
      bFound = True
      Exit For
    End If
  Next
  ' If not open by the current user.
  If bFound = False Then
    ' Check if another user has it open.
    If IsFileLocked(StrWkBkNm) = True Then
      ' Report and exit if true
      MsgBox "The Excel workbook is in use." & vbCr & "Please try again later.", vbExclamation, "File in use"
      If bStrt = True Then .Quit
      Exit Sub
    End If
    ' The file is available, so open it.
    Set xlWkBk = .Workbooks.Open(FileName:=StrWkBkNm)
    If xlWkBk Is Nothing Then
      MsgBox "Cannot open:" & vbCr & StrWkBkNm, vbExclamation
      If bStrt = True Then .Quit
      Exit Sub
    End If
  End If
  Set xlWkSht = xlWkBk.Worksheets(StrWkSht)
  lRow = xlWkSht.UsedRange.Cells(.Rows.Count, 1).End(-4162).Row ' -4162 = xlUp
End With
'Process each document in the folder
While strFile <> ""
  Set wdDoc = Documents.Open(FileName:=strFolder & "\" & strFile, AddToRecentFiles:=False, Visible:=False)
  'Process each word from the F/R List
  For i = 1 To lRow
    With wdDoc.Range
      With .Find
        .ClearFormatting
        .Replacement.ClearFormatting
        .MatchWholeWord = True
        .MatchCase = True
        .Wrap = wdFindStop
        .Text = Trim(xlWkSht.Range("A" & i).Value)
        .Replacement.Text = Trim(xlWkSht.Range("B" & i).Value)
        .Execute Replace:=wdReplaceAll
      End With
    End With
  Next
  'Close the document
  wdDoc.Close SaveChanges:=True
  'Get the next document
  strFile = Dir()
Wend
If bFound = False Then xlWkBk.Close False
If bStrt = True Then xlApp.Quit
' Release Excel object memory
Set xlWkBk = Nothing: Set xlApp = Nothing
Application.ScreenUpdating = True
End Sub
 
Function GetFolder() As String
Dim oFolder As Object
GetFolder = ""
Set oFolder = CreateObject("Shell.Application").BrowseForFolder(0, "Choose a folder", 0)
If (Not oFolder Is Nothing) Then GetFolder = oFolder.Items.Item.Path
Set oFolder = Nothing
End Function
 
Function IsFileLocked(strFileName As String) As Boolean
  On Error Resume Next
  Open strFileName For Binary Access Read Write Lock Read Write As #1
  Close #1
  IsFileLocked = Err.Number
  Err.Clear
End Function