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SMC 0x80070420 Error

Created: 14 Sep 2010 • Updated: 16 Oct 2010 | 2 comments
This issue has been solved. See solution.

we have symantec endpoint antivirus protection installed on our WIN 2K3 server ( 64bit) .Today i tried to stop and restart the mgmnt client using smc-stop/start but it refuses to start and gives 0x80070420 error. Is there any way to restart without server reboot.

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Mahesh Roja's picture

Chage this registry value

Chage this registry value 
Network Threat Protection 

HKEY_LOCAL_MACHINE\SOFTWARE\Symantec\Symantec Endpoint Protection\SMC

smc_engine_status 0 – means turned OFF 1- turned ON.

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P_K_'s picture

Repiar the install and then try

Title: 'Failed to start the Symantec management client service. Error code returned: 0x80070420'
Document ID: 2010040619290348
> Web URL:

MCT MCSE-2012 Symantec Technical Specialist (SCTS)