Verify that the port numbers (default: 25734 and 25735) are added to the Windows Firewall allowed programs. Summary of Solutions Potential Cause Reactivate in SNL Manager Network Blocked Open ports 25734/25735 in firewall Server/Client Mismatch Verify Port@Server address Old Manager Version Upgrade SNL Manager to 2020+
If you are on a floating network license, the --8 544 0- error can appear on all clients if the server is misconfigured.
Access the physical or virtual machine where the SolidNetWork License Manager Server is installed.