How to open multiple outlook windows automatically when Outlook starts? 

When you launch Outlook account, the Mail window is opened as normal. Is it possible to automatically open other Outlook windows, such as Mail, Calendar, Contacts and Tasks windows at the same time when Outlook starts?

Open multiple outlook windows automatically when Outlook starts with VBA code

Open multiple outlook windows automatically when Outlook starts with VBA code

Here, I can introduce a VBA code to help you opening multiple Outlook windows, such as Mail, Calendar, Contacts and Tasks windows immediately when launching Outlook. Please do as this:

1. Hold down the ALT + F11 keys to open the Microsoft Visual Basic for Applications window.

2. In the Microsoft Visual Basic for Applications window, double click ThisOutlookSession from the Project1(VbaProject.OTM) pane to open the module, and then copy and paste the following code into the blank module.

VBA code: Open multiple outlook windows automatically when Outlook starts:

Private Sub Application_Startup()
Dim xCalendar As Folder
Dim xTasks As Folder
Dim xContacts As Folder
Dim xInbox As Folder
Dim xExplorer As Outlook.Explorer
Dim xWidth, xHeight As Integer
On Error Resume Next
xWidth = Int(GetSystemMetrics32(0) / 4) + 60
xHeight = GetSystemMetrics32(1)
Set xInbox = Outlook.Application.ActiveExplorer.CurrentFolder
xInbox.Display
Set Application.ActiveExplorer.CurrentFolder = xInbox
Set xExplorer = Application.ActiveExplorer
With xExplorer
    .WindowState = olNormalWindow
    .Top = 0
    .Left = 0
    .Height = xHeight
    .Width = xWidth
End With
Set xCalendar = Outlook.Session.GetDefaultFolder(olFolderCalendar)
xCalendar.Display
Set xExplorer = Application.ActiveExplorer
With xExplorer
    .WindowState = olNormalWindow
    .Top = 0
   .Left = xWidth
    .Height = xHeight
    .Width = xWidth
End With
Set xContacts = Outlook.Session.GetDefaultFolder(olFolderContacts)
xContacts.Display
Set xExplorer = Application.ActiveExplorer
With xExplorer
    .WindowState = olNormalWindow
    .Top = 0
    .Left = xWidth * 2
    .Height = xHeight
    .Width = xWidth
End With
Set xTasks = Outlook.Session.GetDefaultFolder(olFolderTasks)
xTasks.Display
Set xExplorer = Application.ActiveExplorer
With xExplorer
    .WindowState = olNormalWindow
    .Top = 0
    .Left = xWidth * 3
    .Height = xHeight
    .Width = xWidth
End With
End Sub

3. Then go on clicking Insert > Module, copy and paste below code into the opened blank module, see screenshot:

Declare Function GetSystemMetrics32 Lib "user32" Alias "GetSystemMetrics" (ByVal xIndex As Long) As Long

4. Then save and close the codes, restart the Outlook to take the codes effect. Now, when opening Outlook, the Mail, Calendar, Contacts and Tasks windows will be opened automatically side by side, see screenshot: