7 Tips to Optimize Noria Port Viewer Performance

Troubleshooting Noria Port Viewer: Common Issues and Fixes

1. App won’t start

• Cause: Corrupted install, missing dependencies, or blocked by firewall/antivirus.
• Fixes:
  1. Reinstall the latest release.
  2. Run as administrator (Windows) or use sudo if required (macOS/Linux).
  3. Temporarily disable firewall/antivirus and test; add an exception if it runs.
  4. Check logs in the app data folder for error messages.

2. No ports detected or empty scan results

• Cause: Lack of permissions, wrong network interface, or scan configuration set too narrow.
• Fixes:
  1. Ensure the app has network access and required privileges.
  2. Select the correct network interface in settings.
  3. Expand scan range or switch scanning mode (TCP/UDP).
  4. Verify target host is reachable (ping/traceroute).

3. Slow scans or high CPU usage

• Cause: Large scan ranges, aggressive parallelism, or limited system resources.
• Fixes:
  1. Reduce concurrency/threads in settings.
  2. Limit scan range or exclude known IP blocks.
  3. Close other CPU-heavy applications.
  4. Increase timeout values to reduce retransmissions.

4. False positives / inaccurate port status

• Cause: Firewalls, packet loss, or timing issues.
• Fixes:
  1. Re-scan with different timing/profile settings.
  2. Use alternative scan methods (SYN vs. connect).
  3. Confirm with external tools (telnet, nc) to verify service responses.
  4. Check for intermediate firewalls or load balancers.

5. Cannot save/export scan results

• Cause: File permission issues or unsupported format.
• Fixes:
  1. Choose a writable directory.
  2. Run the app with permissions that allow file writes.
  3. Export in a different supported format (CSV/JSON).
  4. Check disk space.

6. Authentication or credential failures (if using authenticated scans)

• Cause: Wrong credentials, expired tokens, or incompatible auth method.
• Fixes:
  1. Re-enter and verify credentials.
  2. Refresh or regenerate tokens.
  3. Ensure chosen auth method matches the target service.

7. UI glitches or unresponsive interface

• Cause: Graphics driver issues, corrupted cache, or memory pressure.
• Fixes:
  1. Clear the app cache or temp files.
  2. Update graphics drivers and the app.
  3. Restart the app or system.

8. Network timeout or partial results

• Cause: High latency, packet filtering, or incorrect timeout settings.
• Fixes:
  1. Increase