You notice that the Symantec Management Client service terminates repeatedly, smc.exe application fault and CPU usage increases dramatically.
Event ID 7031 / Error / "The Symantec Management Client service terminated unexpectedly. It has done this # time(s). The following corrective action will be taken in 1000 milliseconds: Restart the service."
There is a conflict between older Nortel VPN Client software, its associated adapter and the Symantec Endpoint Protection client's 802.1x module. Please be aware that some third parties have rebranded the Nortel client for use in their software.
Symantec customers have reported the issue with the following versions:
Nortel VPN client V04_65.26 (date: 2002)
Nortel VPN client V04_65.18 (date: 2002)
(Suggested for troubleshooting purposes only) Disable the Nortel IPSECSHM Adapter.