--- title: "Troubleshoot the server" slug: "digipassone-troubleshoot-the-server" updated: 2026-10-27T20:13:33Z published: 2026-10-27T20:13:33Z canonical: "docs.onespan.com/digipassone-troubleshoot-the-server" --- > ## Documentation Index > Fetch the complete documentation index at: https://docs.onespan.com/llms.txt > Use this file to discover all available pages before exploring further. # Troubleshoot the server ## Introduction The following is a list of basic, initial troubleshooting actions to try when attempting to resolve issues encountered during Server installation or operation. Review these steps prior to contacting Digipass S3 support: | **Troubleshooting Action** | **Notes** | | --- | --- | | Review Server logs | Server log location depends on Tomcat installation, e.g. /logs/nnl.log | | Review the Server's FIDO policies | | | Review the API Server FIDO policy configuration | Make sure that the correct policy name is configured in the API Server for registration and authentication. | | Ensure that the Server FIDO policy is configured with the correct AAIDs (UAF) or correct values for the FIDO2 authenticator attributes. | | | Review the Server properties configuration | The tenant-specific and system properties are in the DB. | | Review Tomcat logs | Example default location for Tomcat logs: /logs/catalina.out | | Review Tomcat services | Depends on your individual Tomcat installation | | Review database logs | Depends on your individual database installation; PostgreSQL and Oracle store logs using different methods. Refer to your DBMS provider’s user documentation. | | Review database services | Depends on your individual database installation. | | Check firewall configuration | Ensure that the firewall has the required open ports. This depends on your individual firewall installation, e.g. /etc/sysconfig/iptables | | Verify Server network routing | Depends on your individual deployment environment. Use nmap, netstat, wget, telnet or other tools to check for access | | Review services and logs for proxy server | Depends on your individual installation. Review the documentation for the proxy server software you are using. | | Review configuration and settings for proxy server | Depends on your individual installation. Review the documentation for the proxy server software you are using. |