|Summary||The Cisco VPN Client installer fails with Error 1721.|
A 64-bit and 32-bit variant of the Cisco Systems VPN Client is available. Please ensure you run the correct installer. To determine which version you have installed select Start > Control Panel > System (Icon) *. Under the System > System type: section the bit type is displayed.
* If this icon is not visible, select Classic View from the left hand pane.