This is related to a virus name avupdchk.exe.
My computer couldn’t access to the main antivirus webpage (Norton, trend) after affected.
I’ve killed the application (avupdchk.exe) in the task manager and also delete the files from my computer. Everything seems to be ok. The application doesn’t come out again. However, I still couldn’t access to the antivirus web pages.
Hince, I can’t update my virus defination.
What should I do to solve this?