[en] Your NiceLabel application would like to use a specific computer port for TCP communication, and you are not sure if the port is open.
[en] You can check ports on your computer or on a computer that you want to connect.
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[en] Open the Windows PowerShell application.
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[en] Enter the syntax:
[en]
Test-NetConnection -ComputerName TargetComputer -Port 1234
[en] Where "TargetComputer" stands for your computer name or computer name that you want to connect and "1234" is the port number you want to check.