The names of the files on the software download site are: ... vpnclient-winx64-msi-5.0.07.0290-k9.exe for Windows on x64 (64-bit). ... If you install VPN Client onto Windows 7 x64, move the vpnapi.dll file from the %SystemRoot%\Program ... The Cisco VPN Client software is compatible with the following platforms: • Windows 7 (32-bit and 64-bit). • Windows Vista (32-bit and 64-bit).