Hi Roshankr,
Please take a check and see if your VPN software need an update.
Adding some reference:
http://www.cisco.com/c/en/us/td/docs/security/vpn_client/anyconnect/anyconnect31/release/notes/anyconnect31rn.html#pgfId-320051
Please note: Since this website is not hosted by Microsoft, the information may change without notice. Microsoft does not guarantee the accuracy of this information.
Quoted:
AnyConnect 3.1MR10 (3.1.10010) and later are compatible with Windows 10 official release. Technical Assistance Center (TAC) support will be available beginning on 7/29/2015.
For best results, we recommend a clean install of AnyConnect on Windows 10 system and not an upgrade from Windows 7/8/8.1. If you are planning to perform an upgrade from Windows 7/8/8/1 with AnyConnect pre-installed, make sure that you first upgrade AnyConnect
prior to upgrading the Operating System. The Network Access Manager module must be uninstalled prior to upgrading to Windows 10. After the first upgrade is complete, it can be re-installed on the system. You may also choose to fully uninstall AnyConnect and
re-install one of the supported versions after upgrading to Windows 10.
If any further questions on this topic, please contact Cisco for further assistance.
Regards
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