Step 8: Update macOS
- Apple menu → System Settings → General → Software Update
- Install any pending updates
- Restart Mac
Step 9: Reset Network Settings
- System Settings → Network
- Select active connection (WiFi/Ethernet)
- Click Details → TCP/IP
- Click Renew DHCP Lease
- Go to DNS tab
- Add Google DNS:
8.8.8.8and8.8.4.4 - Click OK and test
Step 10: Check for Proxy Settings
- System Settings → Network
- Select active connection → Details
- Click Proxies tab
- Ensure all proxy options are UNCHECKED
- Click OK
Step 11: Test in Safe Mode
- Restart Mac while holding Shift key
- This disables third-party extensions/software
- Test your site
- If it works, a third-party app is interfering
If nothing else works:
Diagnostic Command
Run this in Terminal and send the output:
curl -vI https://summarytools.cc 2>&1 | grep -E "(SSL|TLS|certificate|error)"