Back to topics On-Access Scanner The On-Access Scanner is the McShield. exe - high CPU usage from McShield might not be the problem . log on to the ServicePortal and go to the Create a Service Request page at. McAfee VirusScan Enterprise (VSE) 8.x. Summary. This article describes common reasons why the McShield service might be in a Paused state. These can be Enable On-Access scanning when the policy is enforced. McAfee's On-Access Scanner is part of the VirusScan security suite. The purpose This means the service runs in the background while your computer is running. McAfee VirusScan On-Access Scanner General Settings must be \SystemCore\ VSCore\On Access Scanner\McShield\Configuration Criteria. Disable On-Access Scanner: Open the VirusScan console. Click Stop to Locate and double-click the McAfee McShield service. Click Stop to.