How to Check Port Used

Start a Windows Terminal window and enter the following command:

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netstat -ano | findstr LISTENING
 

This will use netstat to list all the ports that are currently in use. The output will be like this:

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  TCP    0.0.0.0:135            0.0.0.0:0              LISTENING       1728
  TCP    [::]:445               [::]:0                 LISTENING       4
 

Make sure that the port is not being used by another application if you want your application to run on that port. Done!