Issue Description
Legitimate apps fail to connect to the internet or local network due to firewall restrictions.
Common Causes
- Firewall set to block incoming connections
- App not allowed explicitly
- Corrupt firewall rules
Step-by-Step Solution
Step 1: Check Firewall Status
- Open System Settings → Network → Firewall
- Ensure Firewall is ON but not overly restrictive
Step 2: Allow the Blocked App
- Click Options under Firewall
- Add the affected app
- Set it to Allow incoming connections
Step 3: Disable Stealth Mode (If Enabled)
- Firewall Options → Disable Stealth Mode
Step 4: Restart Mac and Test
- Relaunch the app and verify connectivity
Explore Further
- Reset firewall rules (advanced)
Prevention & Best Practices
Only block apps you fully recognize.