Can I use the UIC VPN through a Remote Desktop session?
Unfortunately, AnyConnect VPN connections are not able to be initiated through a Remote Desktop Protocol (RDP) connection. You will receive an error when attempting to connect. This method of initiating a connection is not possible due to the risk of making the remote machine inaccessible. You must physically access the machine that you want to start an AnyConnect VPN connection on.
AnyConnect VPN access through Remote Desktop