Please check How to Backdate Virus Definitions in Endpoint Protection Manager for more details on how to roll back definitions.” continues Symantec. If it has, run live update either from the gui, or by running LUALL under. If thats there, check under troubleshooting to ensure its picked up the update server. Once complete, do a smc -start and check for the green dot of goodness. “Please run LiveUpdate to download latest Intrusion Prevention signature 4 r62, or rollback to an earlier known good content revision to prevent the BSOD situation. Do a smc -stop, copy the known good sylink file to c/program files/Symantec/Symantec endpoint protection. Symantec recommends to download the new signature version for the Endpoint Protection or roll back to an earlier stable version. The University Technology (UTech) Software Center upgraded Symantec Endpoint Protection to version 12.1.6 MP6. “After running LiveUpdate on Symantec Endpoint Protection (SEP), the computer crashes indicating IDSvix86.sys/IDSvia64.sys as the cause of the exception.” reads the security advisory published by the researchers.

The company released the version 4 r62 to address the issue caused by the 4 r61 update.

Symantec has acknowledged the problem with the update to its Endpoint Protection Client explaining that it causes a Windows kernel exception.

Symantec endpoint protection updates