Hardware⏱️ 3 min read📅 2026-06-04

How to Fix: SocketException: Connection failed (OS Error: Operation not permitted, errno = 1) with flutter app on macOS

Quick Answer:

The SocketException: Connection failed error occurs when the Flutter app on macOS fails to establish a connection with the server. This issue is typically caused by the operating system denying access to the network socket.

This error affects all users of the app, regardless of their macOS version or configuration.

🛑 Root Causes of the Error

  • The primary cause of this error is the OS Error: Operation not permitted (errno = 1). This occurs when the app attempts to establish a connection without sufficient permissions.
  • Another possible cause is a misconfigured network settings or a firewall issue, which prevents the app from accessing the internet.

🛠️ Step-by-Step Verified Fixes

Granting Permissions to the App

  1. Step 1: Open the System Preferences and navigate to Security & Privacy. Click on the 'Firewall' tab.
  2. Step 2: Click on the '+' button at the bottom left corner of the window and select 'Allow outgoing connections in the firewall preferences'.
  3. Step 3: Select the app's bundle ID (com.example.myapp) from the list of allowed applications.

Configuring Network Settings

  1. Step 1: Open the Network Preferences by clicking on the Wi-Fi icon in the top right corner of the screen and selecting 'Network'.
  2. Step 2: Select the Ethernet or Wi-Fi connection that the app is using and click on the gear icon next to it.
  3. Step 3: Click on the '+' button at the bottom left corner of the window and select 'Advanced'.

💡 Conclusion

To resolve the SocketException: Connection failed error, grant the app permission to access the network socket or configure the network settings. If the issue persists, consider reinstalling the app or seeking further assistance from a developer.

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