Beginner5 min read

First Steps After Installing Antivirus Software

Essential configuration steps to ensure maximum protection from day one of your antivirus installation.

By AntiVirusProtection Expert Team
Updated January 2025

Essential Post-Installation Setup

Installing antivirus software is just the beginning. Proper configuration is crucial for optimal protection. Follow these essential steps to ensure your antivirus works effectively from day one.

Step 1: Run Your First Full System Scan

Before doing anything else, perform a comprehensive system scan:

  • Full System Scan: Scan all files, folders, and system areas
  • Boot Sector Check: Ensure no boot-level malware exists
  • Registry Scan: Check for malicious registry entries
  • Memory Scan: Detect any active malware in RAM

⚠️ Important:

This first scan may take 1-3 hours depending on your system size. Run it when you won't need your computer for other tasks.

Step 2: Configure Real-Time Protection

Enable all essential real-time protection features:

  • File System Protection: Monitor all file operations
  • Web Protection: Block malicious websites and downloads
  • Email Scanning: Check attachments and embedded links
  • USB/Removable Media: Auto-scan external devices

Step 3: Update Virus Definitions

Ensure you have the latest threat intelligence:

  • Check for immediate definition updates
  • Enable automatic daily updates
  • Configure update scheduling for off-peak hours
  • Enable cloud-based protection for real-time threat intelligence

Step 4: Configure Firewall Settings

If your antivirus includes a firewall:

  • Enable the firewall if it's not automatically activated
  • Configure network profiles (Home, Work, Public)
  • Review application permissions for network access
  • Enable intrusion detection for advanced protection

Step 5: Set Up Scheduled Scans

Automate regular system maintenance:

  • Weekly quick scans: Fast system overview
  • Monthly full scans: Comprehensive system check
  • Smart scheduling: Run scans when system is idle
  • Custom scan profiles: Focus on high-risk areas

Step 6: Create Exclusions (If Needed)

Some legitimate software may trigger false positives:

  • Add trusted applications to exclusion list
  • Exclude large multimedia files from scans
  • Configure exclusions for development tools
  • Be conservative - only exclude what's necessary

Step 7: Configure Notifications

Customize alert settings for optimal user experience:

  • Critical alerts: Always show immediately
  • Routine notifications: Minimize or disable
  • Scan completion: Show summary results
  • Update confirmations: Silent updates preferred

Step 8: Test Your Protection

Verify everything is working correctly:

  • Visit EICAR test to confirm detection
  • Check if firewall blocks unauthorized connections
  • Verify web protection blocks malicious sites
  • Test email scanning with test messages

Step 9: Register and Activate Premium Features

If you purchased a premium license:

  • Register your product with the vendor
  • Activate all premium features
  • Set up account for multi-device management
  • Configure cloud backup if available

Step 10: Keep Installation Files

Prepare for future needs:

  • Save installer to secure location
  • Record license key information
  • Create system restore point post-installation
  • Document your configuration settings

💡 Pro Tip:

After completing setup, run a second full scan to ensure your initial scan didn't miss anything that was downloaded or created during the setup process.

Ongoing Maintenance

Remember that antivirus protection requires ongoing attention:

  • Review weekly scan reports
  • Keep software updated
  • Periodically review settings
  • Monitor system performance
  • Stay informed about new threats

Following these steps ensures your antivirus software provides maximum protection while minimizing system impact. If you encounter any issues during setup, consult your antivirus vendor's support resources or contact their technical support team.