• Press Alt+F11 to open the VBA editor
  • Press Ctrl+G to open the Immediate window
  • In the Immediate window, type
  • Press Enter
  • Click the red X in the upper right of the VBA editor window to close it
  • Breathe a sigh of relief. Your presentation is fixed.

If you prefer a macro that you can re-use, this code will switch the layout direction each time you run it. If the presentation is Left-to-Right, it makes it Right-to-Left and vice versa.

Sub ToggleDirection()

    If ActivePresentation.LayoutDirection = ppDirectionMixed Then
        MsgBox "Presentation has mixed layout direction; cannot change"
        Exit Sub
    End If

    If ActivePresentation.LayoutDirection = ppDirectionRightToLeft Then
        MsgBox "Presentation was Right to Left" & vbCrLf _
& "Converting it to Left to Right"
        ActivePresentation.LayoutDirection = ppDirectionLeftToRight
        MsgBox "Presentation was Left to Right" & vbCrLf _
& "Converting it to Right to Left"
        ActivePresentation.LayoutDirection = ppDirectionRightToLeft
    End If

End Sub