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

Step 1 – Open the firewall settings

Open Spotlight Search using Command + Space and type firewall

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To make sure that Windows Firewall isn’t blocking Barcode to PC, follow these steps:

Step 1 – Open Windows Firewall exceptions list

  • Open the Start menu by pressing the Windows key on your keyboard. If your keyboard doesn’t have a Windows key, press the Control (Ctrl) and Escape (Esc) keys at the same time.
  • Type firewall.cpl
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