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Microsoft Exchange 2013's JetStress stress testing tool does not work with SEP 12.1 installed


Article ID: 159018


Updated On:


Endpoint Protection


While trying to run Microsoft Exchange 2013's JetStress stress testing tool, it fails to work. Installed is Symantec Endpoint Protection (SEP) 12.1.X

No actual error message is generated but the application, it just fails to function properly


Changes in how JetStress 2013 manages data has created a potential driver-level deadlock with some of our newer technologies (spec. SymEFA). Component isolation indicates root of issue appears to be SymEFA, a component of Core Files.


This issue is resolved in 12.1 RU4 MP1.

Exchange servers responding intermittently
Fix ID: 3402776
Symptom: Microsoft Exchange servers intermittently become unresponsive with Symantec Endpoint Protection installed.
Solution: Resolved a potential deadlock issue in the SymEFA driver.

New fixes and features in Symantec Endpoint Protection and Network Access Control and

This issue has been fixed in Symantec Endpoint Protection 12 Release Update 4 (RU4 MP1).  For information on how to obtain the latest build of Symantec Endpoint Protection, read TECH 103088: Obtaining an upgrade or update for Symantec Endpoint Protection or Symantec Network Access Control.