Hello,
"Symantec AntiVirus has encountered a problem and needs to close. Please tell Microsoft about this problem."
Question arises, Why would an error related to Symantec Antivirus send to Microsoft?
1) This could be either when there is an issue related to the Operating System OR
2) Issue related to clash of Drivers with Microsoft,
What version of SEP 11.x version are you running?
What Operating System are you running ?
Make sure you are carrying the Latest version of SEP version of 11.0.7101
Again, incase you are carrying SEP 11.0.RU6 on Windows 7, check this Article:
Symcorpui crashing on Windows 7. Error: 'Symantec AntiVirus has stopped working' while running scan.
Hope that helps!!