1) Check if the end point security feature is enabled, If not please click on the start button.
2) Check if the CONSCTL.EXE is running properly, If not run it from C:\progra~1\escan folder
Also Please note that after renaming the file (executable) which is already added in block list of application control will only be blocked if that file (executable) which has an Internal name and that been aaded automatically to the block list.
Comment of neeraj:
net is open
Added at: 2012-07-19 15:00