Because new viruses are created all the time, you must update your virus definition files on a regular basis. You should also scan your computer for viruses on a regular basis. Symantec Endpoint Protection allows you to schedule automated scans so that you do not have to start each scan yourself.
STEP 1: Open Symantec Endpoint Protection by going to Start -> All Programs -> Symantec Endpoint Protection -> Symantec Endpoint Protection.
STEP 2: Click Scan for threats.
STEP 3: Click Create a New Scan.
STEP 4: Select which type of scan to run. Click Next.
NOTE: Active scans work much quicker than full scans. However, active scans are not as thorough as full scans. It is recommended that you run a full scan on your computer regularly.
STEP 5: Make sure All types is selected. Click Next.
STEP 6: Select At specified times. Click Next.
STEP 7: Select the frequency and time of the scans. Click Next.
NOTE: Your computer may become slow or unresponsive while running a virus scan, for this reason it is best to choose a time when your computer will not be in use.
STEP 8: Type a name for the scan in the Scan Name field. Make sure Enable the scan is checked. Click Finish.
STEP 9:Verify that the new scan is listed in the scans list.