Hello,
Why not install the Latest version of Symantec Endpoint Protection 14.0.1.2 (14 RU1 MP2) ?
However, you may like to create a Support Case.
Symantec Article on Windows 10 Compatibility given below:
Endpoint Protection support for Windows 10 updates
https://support.symantec.com/en_US/article.TECH235...
It says Windows 10 April 2018 Update (version 1803) requires 14 RU1 (14.0.1)** and above for full support.
Regards,