Follow the steps below to remove ATG software from your Windows machine. Be careful to remove the software in the order described, that is, remove the Oracle ATG Web Commerce [version] software last.
From the Start menu, click Control Panel.
Double-click Programs and Features.
Select Oracle ATG Web Commerce Reference Store [version] and click Uninstall/Change.
In the Commerce Reference Store installer program, click Uninstall.
Click Done.
In the control panel, select Oracle ATG Web Commerce [version] and click Uninstall/Change.
In the Oracle ATG Web Commerce installer program, click Uninstall.
Click Done.
Reboot the machine.