Search all workbooks in a folder is a popular post, I am happy so many find it useful.

rusl cato asks:

hi thanks for the great macro really makes a hard job much easier, can this be made to search subfolders as well?

Matt Durbin asks:

Is there a way to make the search look in subdirectories as well

This is an example of a search i did in c:\temp on my harddrive.

The following vba macro searches workbooks in a folder and subfolders with file extensions *.xls, *.xlsx and *.xlsm.

Public WS As Worksheet
Sub SearchWKBooksSubFolders(Optional Folderpath As Variant, Optional Str As Variant)
Dim myfolder As String
Dim a As Single
Dim sht As Worksheet
Dim Lrow As Single
Dim Folders() As String
Dim Folder As Variant
ReDim Folders(0)
If IsMissing(Folderpath) Then
    Set WS = Sheets.Add
    With Application.FileDialog(msoFileDialogFolderPicker)
        myfolder = .SelectedItems(1) & "\"
    End With
    Str = Application.InputBox(prompt:="Search string:", Title:="Search all workbooks in a folder", Type:=2)
    If Str = "" Then Exit Sub
    WS.Range("A1") = "Search string:"
    WS.Range("B1") = Str
    WS.Range("A2") = "Path:"
    WS.Range("B2") = myfolder
    WS.Range("A3") = "Folderpath"
    WS.Range("B3") = "Workbook"
    WS.Range("C3") = "Worksheet"
    WS.Range("D3") = "Cell Address"
    WS.Range("E3") = "Link"
    Folderpath = myfolder
    Value = Dir(myfolder, &H1F)
    If Right(Folderpath, 2) = "\\" Then
        Exit Sub
    End If
    Value = Dir(Folderpath, &H1F)
End If
Do Until Value = ""
    If Value = "." Or Value = ".." Then
        If GetAttr(Folderpath & Value) = 16 Then
            Folders(UBound(Folders)) = Value
            ReDim Preserve Folders(UBound(Folders) + 1)
        ElseIf Right(Value, 3) = "xls" Or Right(Value, 4) = "xlsx" Or Right(Value, 4) = "xlsm" Then
            On Error Resume Next
            Workbooks.Open Filename:=Folderpath & Value, Password:="zzzzzzzzzzzz"
            If Err.Number <> 0 Then
                WS.Range("A4").Offset(a, 0).Value = Value
                WS.Range("B4").Offset(a, 0).Value = "Password protected"
                a = a + 1
                On Error GoTo 0
                For Each sht In ActiveWorkbook.Worksheets
                        'Expand all groups in sheet
	                sht.Outline.ShowLevels RowLevels:=8, ColumnLevels:=8
                        Set c = sht.Cells.Find(Str, LookIn:=xlValues, LookAt:=xlWhole, SearchOrder:=xlByRows, SearchDirection:=xlNext)
                        If Not c Is Nothing Then
                            firstAddress = c.Address
                                Lrow = WS.Range("A" & Rows.Count).End(xlUp).Row
                                WS.Range("A1").Offset(Lrow, 0).Value = Folderpath
                                WS.Range("B1").Offset(Lrow, 0).Value = Value
                                WS.Range("C1").Offset(Lrow, 0).Value = sht.Name
                                WS.Range("D1").Offset(Lrow, 0).Value = c.Address
                                WS.Hyperlinks.Add Anchor:=WS.Range("E1").Offset(Lrow, 0), Address:=Folderpath & Value, SubAddress:= _
                                "'" & sht.Name & "'" & "!" & c.Address, TextToDisplay:="Link"
                                Set c = sht.Cells.FindNext(c)
                            Loop While Not c Is Nothing And c.Address <> firstAddress
                        End If
                Next sht
            End If
            Workbooks(Value).Close False
            On Error GoTo 0
        End If
    End If
    Value = Dir
For Each Folder In Folders
    SearchWKBooksSubFolders (Folderpath & Folder & "\")
Next Folder
End Sub

1. The macro expands grouped rows and columns before searching a workbook.
2. There is also now a class module in the workbook below, so if you click a hyperlink on a sheet and a workbook opens, grouped data will be expanded.
3. Worksheet names containing some specific characters caused "Reference is not valid" if you click a hyperlink. This is now working.

Download excel *.xlsm file