How do I open an .xls file in 64-bit version of excel without it being in protected view?

Hello,

I recently upgraded my excel version from 32-bit to 64-bit. I currently use a spreadsheet that runs a macro that saves a file received via email each day to a local folder and then open it up for use. In the 32-bit my VB coding worked without any issue. Now however when I run the code I get the following error message:

Run-time error

Office has detected a problem with this file. To help protect your computer this file cannot be opened.

I have to manually go into the directory, open the file and enable it to be opened in edit view.

Below is the current code

Public Sub GetAttachments_CURE()
Dim FileName As String
 Dim i As Integer
 Dim timestamp As Date
 Dim filecheck As Boolean
 Dim ASK As String
 Dim TRYBOOK As String
 Dim Txt As String
 Dim Itemcheck As Object
 
 TRYBOOK = ActiveWorkbook.Name
 
 filecheck = False
 Set Itemcheck = Nothing
 Set olkAPp = CreateObject("outlook.application")
 Set ns = olkAPp.GetNamespace("MAPI")
 Set Inbox = olkAPp.Session.Folders("London MO - Rates").Folders("Inbox")
 i = 0
 
 If Inbox.Items.Count = 0 Then
    MsgBox "There are no messages in the Inbox.", vbInformation, "Nothing Found"
    Exit Sub
 End If
 
 For Each Item In Inbox.Items
 
   For Each Atmt In Item.Attachments
     If Left(Atmt, 7) <> "Picture" And Left(Atmt, 5) <> "image" Then
        If LCase(Atmt.FileName) Like "*.xls*" Then
           If Atmt.FileName = "MO_London_Rates.xls" Then
                If Dir("C:\Temp\CURE.xls") <> "" Then
                   Kill "C:\Temp\CURE.xls"
                End If
                FileName = "C:\Temp\CURE.xls"
                Atmt.SaveAsFile FileName
                Workbooks.Open ("C:\Temp\CURE.xls")
                If Mid(Range("A6").Value, 45, 2) & "/" & Mid(Range("A6").Value, 42, 2) & "/" & Mid(Range("A6").Value, 48, 4) <> Format(Now(), "DD/MM/YYYY") Then
                   MsgBox "The CURE file contains old data!!!", vbOKOnly + vbExclamation, "OLD DATA!!!"
                End If
                Range("A6:F300").Select
                Selection.Copy
                Workbooks(TRYBOOK).Activate
                Sheets("CURE_Flat").Select
                Range("A6").Select
                ActiveSheet.Paste
                ActiveSheet.Calculate
                Exit Sub
           End If
        End If
     End If
   Next Atmt
'Line1:

Next Item
'goto exitSub
 
'GetAttachments_exit:
   Set Atmt = Nothing
   Set Item = Nothing
   Set ns = Nothing
'   GoTo Line1
'GetAttachments_err:
 
'   Resume GetAttachments_exit
'exitSub:
MsgBox "NO CURE FILE PRESENT!!!"

End
End Sub