You are welcome.
According to Symantec, it seems that error code is because you are trying to run it in safe mode...
Why is error 0x8007043c being produced when trying to start the SEP (Symantec Endpoint Protection) user interface in safe mode?
When launching Symantec Endpoint Protection (from the Start menu) in Safe Mode the following error is displayed:
"It appears that the Symantec Management Client service is not running. You will not be able to manage network protection settings through the main user interface until it is running.
Do you want to start the service now?"
Clicking "Yes" will trigger the following error and the Symantec Endpoint Protection user interface will not open:
"Failed to start the Symantec Management Client service. Error code returned: 0x8007043c"
The SMC (Symantec Management Client) service will not start because networking is not available in safe mode.
Click "No" instead. http://service1.symantec.com/SUPPORT/ent-s...007121210520948
I know you said that it does it in safe mode with networking too and I am not sure of the reason for that one unless you are not actually able to connect when in that mode or if it is just a case of, like ZoneAlarm, it just does not run in safe mode
Edited by Stang777, 27 January 2010 - 03:07 AM.