Cisco VPN Client is a software application for connecting to virtual private networks. A virtual private network (VPN) extends a private network across a public network and enables users to send and receive data across shared or public networks as if their computing devices were directly connected to the private network.
So the benefits of a VPN include increases in functionality, security, and management of the private network.
Cisco VPN client Installation and Setup Instructions for Windows
From 2011 it’s have been discontinued, Cisco VPN client is not supported by Windows 10. We provided a tweak installation below, that may help you for installation the client.
Download and install below setups. So, Now need to Install DNE update from below location

Once, you installed the DNE setup proceed to the Cisco VPN client and install the setup easily by clicking Next by Next button.
URL : https://www.ibm.com/developerworks/community/files/app#/file/90b4f704-9b8b-4118-81e5-d4c4b949b3c3
Follow the next steps by default no other changes require.
Extract the setup and run as administrator “vpnclient_setup” and proceed the next steps and finish the setup.
Start the VPN client application and add “pcf” profiles using imported button.
Connect the profile that just added it will prompt for user and password. Enter your credentials.

Follow the below steps: –
Open your Windows Registry Editor by typing regedit in the Window run.
From the window on right, select and right -click on Display Name and choose Modify from the menu. Alternatively, Double-click on Display Name.

Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\CVirtA
So for Windows 10 64bit (x64) operating systems, change the value data from “@oem8.inf,%CVirtA_Desc%;Cisco Systems VPN Adapter for 64-bit Windows”
to
“Cisco Systems VPN Adapter for 64-bit Windows” (shown below):

The registry key now shows the correct DisplayName value data:

You should be able to connect to your VPN Router or Gateway without any problems.
So For any quires, please comment will try to resolve it.