This article provides steps to troubleshoot and resolve the license errors -17 and -111 encountered in NetSim Lite when attempting to connect to the license server.
Important: Try Connecting from a Different Network
This error is commonly encountered on organizational or corporate networks, where firewall or security settings may restrict access to certain ports. To cross-verify or resolve the issue:
- Try connecting to a personal network such as a mobile hotspot or home Wi-Fi. This can help determine if the issue is network-specific and bypass potential restrictions on the organizational network.
Solution Steps:
Verify Internet Connection
Ensure that your device has an active and stable internet connection. NetSim Lite requires internet access to validate its license with the server.Check Firewall Settings
- Confirm that your firewall is not blocking NetSim Lite's communication ports.
- Allow port 5053 and port 5258 through your firewall. These ports are essential for NetSim Lite to communicate with the license server.
- Proxy Configuration (if applicable): If your network uses a proxy server, verify that the proxy settings permit traffic on ports 5053 and 5258. You may need to adjust your proxy or consult your network administrator.
- Restart NetSim Lite: After adjusting your network settings, restart NetSim Lite and attempt to reconnect. This ensures that any changes take effect.
Additional Network Checks
- VPN Connections: If you're using a VPN, try disconnecting, as it may interfere with the license server connection.
- Antivirus Software: Some antivirus programs may block network connections. Temporarily disable them to see if it resolves the issue.
Contact Support
If the error persists after following these steps, please contact our support team:- Email: support@tetcos.com
- Information to Provide:
- A screenshot of the error message.
- Details about your operating system and network setup.
- Any firewall or antivirus software you are using.