I am using
OS High Sierra Version: 10.13.6 (17G7024)
Cisco Anyconnect Secure Mobility Version: 4.5.00058
And I am facing consistent problem while connecting with VPN, whenever I enter credentials for login then it need to ask for 2-Factor-Authentication but it is not responding after entering credentials.

PS: Same credentials are working just fine on my friend's system with same version of software and OS.