Issue Description
Screen Sharing fails to connect or displays a blank screen.
Common Causes
- Screen Sharing disabled
- Firewall blocking connection
- Permission issues
Step-by-Step Solution
Step 1: Enable Screen Sharing
- System Settings → General → Sharing
- Enable Screen Sharing
Step 2: Check Permissions
- Click i next to Screen Sharing
- Add allowed users
Step 3: Allow Through Firewall
- Network → Firewall
- Allow Screen Sharing service
Step 4: Restart Both Macs
- Retry screen sharing
Explore Further
- Use Messages app for quick screen share
Prevention & Best Practices
Limit screen sharing to trusted users.