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  2. Screens
  3. If Something Goes Wrong

If Something Goes Wrong

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What to do when something doesn't work as expected.

  • Screens Diagnostics Reports
  • Rect Out Of Bounds
  • Screens is stuck at "Downloading..."
  • My sleeping Mac isn't waking up for Screens
  • My sleeping Windows PC isn't waking up for Screens
  • The "Connecting" message stays on-screen and the connection is never established.
  • I cannot control my Mac
  • I’m having trouble connecting to a computer on the same network.
  • 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
  • Double-NAT Scenarios
  • Secure Connection Refused or Unsupported
  • Managed Networks
  • Error: Operation Timed Out
  • Curtain Mode Persists After Disconnection
  • Saved Screens Disappear Or Are Not Being Saved
  • 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
  • Screens for Mac crashes on launch
  • 3-finger swipe gestures are not working with macOS 10.14 Mojave
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