Please follow the below step to fix the issue,
1. Logon to SecurityCenter
2. Policies | Add Policy (name it as required) | Virus &Spyware Protection | Advanced Settings
3. Enable the following option 'Enable McAfee Global ThreatIntelligence file reputation service' and change the Sensitivity level to 'Low'
4. Save the policy and apply it to the problematic computer.
5. Now do a manual update and then check for the issue.