Warning W509 - The anti-virus scanner reports that on-demand scanning is disabled.
Warning W509 - The anti-virus scanner reports that on-demand scanning is disabled.
Fix: Check whether on-demand scanning is disabled indeed. It is best to leave this on unless you are running frequent virus scans of the whole computer and you are not downloading/installing new applications before scanning them.
On-demand scanning does reduce the computerΓÇÖs performance as well as consume resources.
For more information, please see the (FAQ).