Why do I receive the error of "Failed to request scan. Insufficient number of anti-malware engines active"?

Root Causes

This error occurs when the minimum required number of AV engines is not available. Common reasons include:

• All AV engines are updating or All AV engines fail to start or are stuck in staging.
• Minimum engine count setting too high.

How to Prevent It

1. Fix Unavailable Engines

• Go to Inventory > Modules >Metascan> Manually delete problematic engines by clicking on the three dots (…) > Delete
• Inventory > Modules > Click Update All.

2. Schedule Updates After Hours

• Go to Settings > Modules Update > Internet/Local Folder.
• Use "Pause scheduled update during" to avoid updates during business hours.

3. Lower the Required AV Engine Count in your workflow

• Set the required number of AV engines to less than the total available.
  • Example: If you have 8 engines, set required to as low as 1 or any number smaller than 8.
• Workflow setting* - Workflows > <name of workflow> > Metascan