If the USB is not being blocked after inserting
1) Check if the "End point security" feature is started.
2) Check if the "Enable USB control" option is chcek marked.
3) Check if the USB device is not added in the "Whitelist".
4) Check if the "CONSCTL.EXE" is running in the taskmanager.
If do virus scan is checked but still the scanning not starting after the inserting the USB device.
1) Check if the "End point security" feature is started.
2) Check if the "Enable USB control" option is chcek marked.
3) Check if the USB device is not added in the "Whitelist".
4) Check if the "CONSCTL.EXE" is running in the taskmanager.
5) Check if the mwavscan.com file is present.