For the following steps, use your keyboard rather than your mouse. Press ALT and TAB simultaneously.

Scroll through the open programs with your arrow keys.

When you reach Microsoft Outlook, stop.

Press ALT and SPACE at the same time, bringing up the System window.

When the drop-down box appears, scroll down to "Size."

Resize your Outlook window to the size you prefer. Now your window will appear whether it is minimized or maximized.