Outlook 2019 - VBA code not running

[JOHANKOTZE]

Hi everyone
The below code does not run in Outlook 2019. Marco settings set to accept digital Signed macros. Digital Certificate can be found under email trusted publishers. The code below do run on my other pc and laptop with Outlook 2021. I have run mmc. Thx to Graham Mayor. VBA references are the same on both Computers.

Private WithEvents objSentItems As Items

Private Sub Application_Startup()
Dim objSent As Outlook.MAPIFolder
Set objNS = Application.GetNamespace("MAPI")
Set objSentItems = objNS.GetDefaultFolder(olFolderSentMail).Items
Set objNS = Nothing
End Sub

Public Sub SaveMessageAsMsg()
  Dim oMail As Outlook.MailItem
  Dim objItem As Object
  Dim sPath As String
  Dim dtDate As Date
  Dim sName As String
  Dim StrFolderpath As String
  Dim StrUserPath As Variant

'Defaults to Documents folder
StrUserPath = "\\JK_Server-PC\Users\JK_Server\My Documents\JKBrokers\Clients\"
StrFolderpath = BrowseForFolder(StrUserPath)
  
   For Each objItem In ActiveExplorer.Selection
   If objItem.MessageClass = "IPM.Note" Then
    Set oMail = objItem
    
  sName = oMail.Subject
  ReplaceCharsForFileName sName, "-"
  
  dtDate = oMail.ReceivedTime
  sName = Format(dtDate, "ddmmyyyy", vbUseSystemDayOfWeek, _
    vbUseSystem) & Format(dtDate, "-hhnnss", _
    vbUseSystemDayOfWeek, vbUseSystem) & "-" & sName & ".msg"
      
  sPath = StrFolderpath & "\"
  Debug.Print sPath & sName
  oMail.SaveAs sPath & sName, olMSG
   
  End If
  Next
   
End Sub

Private Sub ReplaceCharsForFileName(sName As String, _
  sChr As String _
)
  sName = Replace(sName, "'", sChr)
  sName = Replace(sName, "*", sChr)
  sName = Replace(sName, "/", sChr)
  sName = Replace(sName, "\", sChr)
  sName = Replace(sName, ":", sChr)
  sName = Replace(sName, "?", sChr)
  sName = Replace(sName, Chr(34), sChr)
  sName = Replace(sName, "<", sChr)
  sName = Replace(sName, ">", sChr)
  sName = Replace(sName, "|", sChr)
End Sub

Function BrowseForFolder(Optional OpenAt As Variant) As Variant
  Dim ShellApp As Object
  Set ShellApp = CreateObject("Shell.Application"). _
 BrowseForFolder(0, "Please choose a folder", 0, OpenAt)
 
 On Error Resume Next
    BrowseForFolder = ShellApp.self.Path
 On Error GoTo 0
 
 Set ShellApp = Nothing
    Select Case Mid(BrowseForFolder, 2, 1)
        Case Is = ":"
            If Left(BrowseForFolder, 1) = ":" Then GoTo Invalid
        Case Is = "\"
            If Not Left(BrowseForFolder, 1) = "\" Then GoTo Invalid
        Case Else
            GoTo Invalid
    End Select
 Exit Function
 
Invalid:
    BrowseForFolder = False
End Function
 
Invalid:
 BrowseForFolder = False
End Function