Symantec Upgrade Advise

Dear All,

Currently, in our property, we are using Symantec Endpoint Protection Manager and Endpoint Protection version 12.1.2015.2015. Currently, this doesn't support in installing for devices with Windows 10 OS. But it's compatible with windows server 2012. Kindly advice me to which version should we upgrade to for the windows 10 compatibility. And if we are upgrading what challenges we will face or are there any requirements. 

Thank you all in advance. Please help. I need to submit my company by today itself.

Thanks & Regards,

Shiras Nahas