Question
How do I troubleshoot firewall issues that might be causing the error?
Asked by: USER1679
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70 Answers
Answer (70)
macOS has a built-in firewall. Temporarily disable the firewall to see if that resolves the issue. If it does, you'll need to create an exception for the download source in the firewall settings. Be sure to re-enable the firewall once you've found the solution.