Configure the Firewall on macOS

To make sure that the firewall on your mac isn’t blocking Barcode to PC, follow these steps:

1) Open the Security & Privacy settings

Open Spotlight Search using Command + Space and type Security & Privacy

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1) Open the Firewall settings

Type firewall in the System Preferences search bar and hit ENTER

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2) Click the lock and authenticate your self

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3) Click Firwall Options

If Barcode to PC server is already present in the list you don't have to anithing, and you can skip the following steps.

4) Press the + button and select Barcode to PC server.app

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5) Click Add and then OK

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