Common Issues

No Security Signals appear

1. Verify Agent version:
   • Confirm you’re running Datadog Agent v7.41.1 or higher.
   • Check Agent status: datadog-agent status.
2. Check .NET tracer version:
   • Confirm you’re using .NET tracer v2.42.0 or higher.
3. Verify environment variables:
   • Confirm DD_APPSEC_ENABLED=true is set.
   • Check DD_SERVICE and DD_ENV are properly configured.
   • Verify DD_APM_ENABLED=true if using APM features.
4. Check file system permissions:
   • Verify the Datadog .NET tracer installation directory exists and that the native tracer library is readable.
   • Verify the tracer log directory is writable (/var/log/datadog/dotnet/ on Linux or %PROGRAMDATA%\Datadog .NET Tracer\logs\ on Windows).

Application fails to start

1. Check logs for errors:
   • Logs are located at
     • Linux: /var/log/datadog/dotnet/
     • Windows: %PROGRAMDATA%\Datadog .NET Tracer\logs\

Performance impact

1. High latency:
   • Check Agent resource usage.
   • Verify network connectivity between Agent and Datadog.
   • Consider adjusting sampling rates.
2. High memory usage:
   • Monitor memory usage.
   • Adjust Agent resource limits if needed

Still having issues?

If you’re still experiencing problems:

1. Check the Application Security Monitoring troubleshooting guide
2. Review the .NET tracer documentation
3. Contact Datadog support