After installing Symantec Endpoint Protection 14 MP2, you notice that Windows servers randomly hang with this build.

The cause is from an Auto-Protect deadlock.

This issue is fixed in Symantec Endpoint Protection Client 14 RU1.  For information on how to obtain the latest build of Symantec Endpoint Protection, read
TECH 103088: Download the latest version of Symantec Endpoint Protection