Quick Summary
Error 100060 on macOS typically indicates a general network connectivity problem preventing your application or system from accessing the internet or a local network resource. This error suggests that while your Mac might appear connected, something is blocking or disrupting the data flow.
Common Causes
- Network Adapter Issues: Malfunctioning or improperly configured network interfaces (Wi-Fi or Ethernet) can prevent your Mac from establishing a stable connection. This can be due to outdated drivers, incorrect settings, or hardware problems.
- Firewall or Security Software Interference: Firewall settings, antivirus software, or other security applications can inadvertently block the application or system component trying to access the network. Overly restrictive rules can prevent legitimate connections.
- DNS Resolution Problems: The Domain Name System (DNS) translates domain names (like google.com) into IP addresses. If your DNS server is unavailable or misconfigured, your Mac won't be able to resolve these names and connect to the corresponding servers.
- Router Problems: Your router might be experiencing issues, such as being overloaded, having incorrect settings, or needing a reset. An unstable router will fail to transfer packets to and from connected devices resulting in "network connection issue."
- ISP Outage: Your Internet Service Provider (ISP) might be experiencing an outage, resulting in no connection to the internet. Check for reports from your ISP regarding any issues.
Step-by-Step Fixes
Method 1: Restart Network Devices
Step 1: Restart your modem and router. Unplug both devices, wait 30 seconds, plug the modem back in, wait for it to fully initialize, and then plug the router back in.
Step 2: Restart your Mac. Go to the Apple menu and select "Restart".
Step 3: After both devices have restarted, check if the error persists.
Method 2: Check Network Connection
Step 1: Verify you're connected to the correct Wi-Fi network.
Step 2: Open System Preferences (from the Apple menu) and go to "Network".
Step 3: Ensure your Wi-Fi (or Ethernet) is connected and has a valid IP address assigned.
Step 4: If your Mac isn't getting an IP address, click "Advanced...", then go to the "TCP/IP" tab, and click "Renew DHCP Lease".
Method 3: Disable Firewall Temporarily
Step 1: Go to System Preferences and select "Security & Privacy".
Step 2: Click the "Firewall" tab.
Step 3: If the padlock in the lower-left corner is locked, click it and enter your administrator password to unlock the settings.
Step 4: Click "Turn Off Firewall".
Step 5: Try recreating the error. If it's resolved, re-enable the firewall and configure it to allow the necessary connections for your application. Remember to relock the settings afterwards.
Method 4: Change DNS Servers
Step 1: Go to System Preferences > Network.
Step 2: Select your active network connection (Wi-Fi or Ethernet) and click "Advanced...".
Step 3: Go to the "DNS" tab.
Step 4: Add new DNS servers by clicking the "+" button. Try using Google's public DNS servers (8.8.8.8 and 8.8.4.4) or Cloudflare's (1.1.1.1 and 1.0.0.1).
Step 5: Click "OK" and then "Apply".
Method 5: Check for Software Updates
Step 1: Open the Apple menu and select "About This Mac".
Step 2: Click "Software Update...".
Step 3: Install any available updates for your operating system. These updates can often include fixes for network-related issues.