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#11
This solution works if you go to registry editor, have the Outlook window opened and sized. Then delete the "Frame" entry. Close Outlook. Then refresh the registry window and redelete the "Frame" then restart Win 10. Once restarted, I found the Outlook window reopened in the last position. That's what work for me. I had to restart, then open Outlook and it did so with the last position. There may be another registry entry that I don't know about which also has control as well. That "other" registry entry seems to have overriding control.