Every post I've found for this problem seems to have been resolved with
Application.ScreenUpdating = True. Not in this case.

With 2 UserForms, Form 1 remains visible behind Form 2, even though Form 1
was unloaded before Form 2 was loaded & shown.

The main code module (all variables are Public):

Sub ACRE_MthCtrb()

Application.ScreenUpdating = True

ThisWorkbook.Activate
FilPth = ThisWorkbook.Path & "\"

<< The 1st UserForm loads, executes & unloads in function VldLogin() .
This form & function are in a separate, hidden workbook, with a
reference
set in the current workbook.

LoginVld = VldLogin()
If Not LoginVld = True Then
ActiveWindow.Close _
SaveChanges:=False
End If

<< Here, the 2nd UserForm, ProgBar, appears. The 1st form already unloaded.

Application.ScreenUpdating = False

ProgBar.LblProgBar.Width = 0
ProgBar.Show

<< Remainder of processing is in Sub Prc(), called from UserForm ProgBar


Workbooks("ACRE Monthly Contributions.xls").Activate
Application.ScreenUpdating = True
ActiveWindow.Close _
SaveChanges:=False
End Sub

Sub Prc()
..
..
..
End of module

<< The 1st UserForm, QryLogin, loads in this module, Login:

Public Function VldLogin() As Boolean
Abt = vbNo
Load QryLogin
QryLogin.Show
If Abt = vbYes Then
VldLogin = False
Else
VldLogin = True
End If
End Function

<< Userform QryLogin contains the following code:

Private Sub OK_Click()
Dim LoginAut As Boolean

If Len(Trim(Me.UsrID)) = 0 Then
MsgBox ("You Must Enter A User Name")
Me.UsrID.SetFocus
ElseIf Len(Trim(Me.Psw)) = 0 Then
MsgBox ("You Must Enter A Password")
Me.Psw.SetFocus
Else
LoginAut = AutLogin(Me.UsrID, Me.Psw)
If LoginAut = True Then
Login.UsrID = Me.UsrID.Value
Login.Psw = Me.Psw.Value

<< Here is the Unload for the 1st form

Unload Me
Else
MsgBox ("Invalid Username or Password; Please Re-Enter")
Me.UsrID.SetFocus
End If
End If
End Sub

Function AutLogin(ByVal UsrID As String, _
ByVal Psw As String) _
As Boolean

Const ADS_SECURE_AUTHENTICATION = 1
Dim Aut As Object ' Authentication
Dim Dmn As String ' Domain
Dim G_C As Object ' Global Catalog
Dim Root As Object ' RootDSE

On Error Resume Next
Set Root = GetObject("GC://rootDSE")
Dmn = Root.Get("defaultNamingContext")
Set G_C = GetObject("GC:")
Set Aut = G_C.OpenDSObject("GC://" & Dmn, UsrID, Psw,
ADS_SECURE_AUTHENTICATION)

If Aut Is Nothing Then
AutLogin = False
Else
AutLogin = True
End If

Set Aut = Nothing
Set G_C = Nothing
Set Root = Nothing
End Function

<< The 2nd UserForm, ProgBar, conatains this code:

Private Sub UserForm_Activate()
Call Prc
Unload Me
End Sub

Stepping thru the logic, it works fine; Form 1 disappears before Form 2
appears.
Running full-bore, Form 1 remains visible behind Form 2 the entire time the
program runs. Since screen updating is off at this time, the processing is
not seen behind Form 1, which is correct.

I have tried moving the 'ScreenUpdating = False' statement further on in the
code but to no avail.
Is there, perhaps, a UserForm property or some Excel setting that would
cause this?

--
Will