Hi security experts ;)
I configured a client-based SSL VPN lab throught the GNS3. this is my network topology:

USER-PC is a vmware virtual machine. It uses the vmnet30 interface to work. with the vmnet30 interface I can choose two of my virtual machines, Windows XP Professional SP3 and Windows 10 Professional. both use a different version of the Cisco AnyConnect. WXP uses the 3.1.03103 version, and W10 uses the 4.3.04027 version. ASAv-9.8(2) firewall uses the anyconnect-win-3.1.03103-k9.pkg file to run AnyConnect service (the same version installed on WXP machine).
what is the problem? If I use Windows XP machine, the VPN client doesn't work, it can't connect to the Cisco ASA via SSL. It give me a message error: "Connection attempt failed. Please try again":

following you can see the message history by the VPN client:

how can I fix this problem? If I use the W10 machine I have not this problem! I don't see any message errors, and the SSL VPN brings up perfectly. what is wrong with WXP machine? for my virtual labs I prefer use WXP then W10. It uses less host resources, and it is more faster than W10.