Software⏱️ 3 min read📅 2026-06-11

How to Fix: Homebrew gives SSL error (SSL_ERROR_SYSCALL) on home network

Homebrew SSL error on home network fix

Quick Answer: Check your router settings and ISP configuration for any restrictions or issues that may be causing the problem.

📋 Table of Contents

  1. ⚠️ Common Causes
  2. ✅ Best Solutions to Fix It
  3. ✨ Wrapping Up

Homebrew users on home networks are experiencing an error when attempting to install packages via Homebrew, resulting in an SSL error. This issue affects users who have internet connectivity through their home network but not through their mobile devices.

This error can be frustrating for users as it prevents them from installing essential packages and accessing the Homebrew repository. In this guide, we will walk you through the possible causes of this error and provide steps to resolve the issue.

⚠️ Common Causes

  • The primary cause of this error is related to the configuration of your home network's DNS settings or your router's firewall rules. When using a homebrew installation on a wired connection, the Homebrew client may not be able to establish a secure connection due to incorrect DNS settings or blocked ports.
  • Alternatively, it could also be caused by issues with the ISP's DNS servers or the specific configuration of your router's firewall. In some cases, this error might also be related to the version of OpenSSL used on your system.

✅ Best Solutions to Fix It

Configuring DNS settings and firewall rules

  1. Step 1: Step 1: Check and update your DNS settings on your router. Ensure that the DNS server is set to a public DNS service, such as Google Public DNS (8.8.8.8) or Cloudflare DNS (1.1.1.1). You can do this by accessing your router's web interface and navigating to the DNS settings section.
  2. Step 2: Step 2: Verify that the port used for Homebrew is not blocked by the firewall rules on your router. Check if the port range specified in the Homebrew configuration file (usually /etc/hosts.plist) is open. If it is, you can try disabling or modifying the firewall rule to allow Homebrew access.
  3. Step 3: Step 3: Restart your router and Homebrew client after making any changes to DNS settings or firewall rules.

Upgrading OpenSSL

  1. Step 1: Step 1: Check if you have the latest version of OpenSSL installed on your system. You can use the following command to check the current version: openssl version. If the version is outdated, proceed to the next step.
  2. Step 2: Step 2: Update or upgrade OpenSSL using Homebrew by running the following command: brew update && brew upgrade openssl.

✨ Wrapping Up

By following these steps, you should be able to resolve the SSL error and successfully install packages via Homebrew on your home network. If you continue to experience issues after trying these methods, it may be worth contacting your ISP or a networking expert for further assistance.

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