In Epicor 10, Epicor introduced the Tile Menu Theme.
Some people do not like the Epicor 10 menu theme and they want to use the Classic Epicor 9 theme. When running is an environment that is not using Single Sign on this is easy just by clicking on the “Classic Style” checkbox on the sign on screen.
When running Single Sign on you do not have this option. When running Single Sign on you need to add the “/Classic” switch to the Target field on your Epicor 10 icon. Highlighted in Blue below.
You will now get the Classic Epicor 9 style when Epicor 10 opens.
Remove the “Classic Style” switch and you are back to the Epicor 10 Tiles style.