When I attempt to install Service Pack 3 for ISE Design Suite 10.1 on a Microsoft Windows Vista operating systems, the update crashes or does not launch.
In some cases, a dialog box appears stating that system administrator privileges are require to install the software. If this message is ignored, the XilinxUpdate process fails at 99% and a dialog box appears stating that an error was encountered while transferring downloaded files.
Xilinx has noticed a compatibility problem between the XilinxUpdate tool and Microsoft Windows Vista when Microsoft's User Account Control (UAC) is enabled.
Xilinx recommends temporarily disabling UAC and then running XilinxUpdate again to apply Service Pack 3. UAC can be enabled again following the successful completion of XilinxUpdate.