Norton indicates the virus definitions are not up to date. When I select the option to FIX, the fix appears to complete (FIX COMPLETE) successfully. the error indicator FIX NOT COMPLETE APPEARS and YOUR COMPUTER AT RISK etc. keeps indicating the error. Retries are unsuccessful. Attempted to download and update Norton Security. I initiate the download but it does not start and provider (Microsoft Explorer) message THE SECURITY CERTIFICATE PRESENTED BY THIS WEBSITE HAS EXPIRED OR NOT YET VALID appears.
Any help will be much appreciated.