An intermittent System reboot is experienced on server. Crash dump shows the following
SYMBOL_NAME: SymEvnt!Oplocks::GetSafeFileObject+177
MODULE_NAME: SymEvnt
IMAGE_NAME: SymEvnt.sys
IMAGE_VERSION: 1.8.0.502
BUCKET_ID_FUNC_OFFSET: 177
FAILURE_BUCKET_ID: 0x18_SymEvnt!Oplocks::GetSafeFileObject
SEP 14.3.x
A crash dump analysis shows it was probably caused by SymEvent. Application Hardening component is also installed as part of SEP.
This issue is fixed in SEP 14.3 RU7.
As a workaround, uninstall Application Hardening to fix the problem.