If Something Goes Wrong
What to do when something doesn't work as expected.
- I’m having trouble connecting to a computer on the same network.
- I’m having trouble connecting to a remote computer from a different network.
- Screens Diagnostics Reports
- My sleeping Mac isn't waking for Screens
- Double-NAT Scenarios
- 3-finger swipe gestures are not working with macOS 10.14 Mojave
- I cannot control my Mac
- The "Connecting" message stays on-screen and the connection is never established.
- Invalid Protocol
- Codec Error
- Unsupported VNC Authentication
- Screen Sharing or VNC Connection Refused
- Carrier-Grade NAT/Large-Scale NAT
- Mac Screen Sharing Session was Denied or Unsupported
- Why do I sometimes have to log in twice when connecting to my Mac?
- Secure Connection Authentication Error
- Secure Connection Refused or Unsupported
- Managed Networks
- Error: Operation Timed Out
- Manually Configuring a Router
- The macOS Log-In Screen
- Curtain Mode Persists After Disconnection
- Pointer clicks have no effect on remote Mac desktop
- Saved Screens Disappear
- Hang/Stall While Connecting
- Disconnection from RealVNC Server Upon Login or Keyboard Input
- Connecting to OS X 10.4 Tiger Displays Blank Screen
- Error: Unsupported Authentication Method
- Using Vertical Displays with Screens
- VNC Errors