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 installer program, click Uninstall.
Click Done.
In the control panel, select Oracle ATG Web Commerce Search [version] and click Uninstall/Change.
In the installer program, click Uninstall.
Click Done.
In the control panel, select Oracle ATG Web Commerce [version] and click Uninstall/Change.
In the installer program, click Uninstall.
Click Done.
Reboot the machine.