AnyConnect client will not install (Error 1722). Why?
For Windows 7. check that windows firewall service is up and running.
if not then start it. If service not exists then you most likely caught a virus which updated/removed some regedit entries on your PC. check if HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\BFE and HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MpsSvc exists. If not – follow this url for detailed and tested solution: http://social.technet.microsoft.com/Forums/en/w7itprosecurity/thread/5366225a-46e7-4d6c-a389-8bd18a5c3aad
check your system for viruses maleware processes running etc you might still have some.
A. AnyConnect installation fails with this error: MSI (s) (D8:70) [14:59:10:750]: Product: Cisco AnyConnect VPN Client — Error 1722. There is a problem with this Windows Installer package A program run as part of the setup did not finish as expected. Contact your support personnel or package vendor. Action VACon_Install, location:C:\Program Files\Cisco\Cisco AnyConnect VPN Client\VACon.exe, command: -install “C:\Program Files\Cisco\Cisco AnyConnect VPN Client\vpnva.inf” VPNVA The 1722 error is an generic code for an MSI action failure. In this case, as revealed in the MSI log, the Virtual Adapter installer has failed. Therefore, you need to check whether this registry key is present or not: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce.