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amw00
User level: Level 1 (4 points)

Mirroring blue screen OS 27

OS 27 has caused a problem with mirroring my iPad with my Mac book pro. I used the iPad to write onto the MacBook Pro After installing OS 27

mirroring produces a blue screen went to Apple Store genius tried but couldn’t fix problem As anybody had a similar problem Any ideas how to fix

Posted on Oct 19, 2026 2:52 PM

3 replies

neuroanatomist
User level: Level 9 (72,871 points)

Oct 19, 2026 3:50 PM in response to amw00

Major OS updates (such as macOS and iOS version changes) can alter AirPlay codecs, security tokens, and local hardware acceleration pipelines, frequently resulting in a blank or blue screen when mirroring or using Sidecar/AirPlay from an iPad.


Troubleshooting Steps to Fix the Blue Screen

  • Check AirPlay & Handoff Settings: On both your Mac and iPad, go to System Settings (or Settings) > General > AirDrop & Handoff and ensure AirPlay/Handoff is enabled and set to allow connections from everyone or the same network.
  • Sign Out and Back Into Apple ID: On your Mac and iPad, sign out of your Apple ID and sign back in to refresh the continuity and device-pairing security tokens.
  • Reset Network Settings: On your iPad, go to Settings > General > Transfer or Reset iPad > Reset > Reset Network Settings. 
  • Toggle Wi-Fi and Bluetooth: Turn off Wi-Fi and Bluetooth on both the Mac and iPad, wait 15 seconds, and turn them back on.
  • Bypass Wi-Fi via USB Cable: If you are trying to mirror or use the iPad as a second display (Sidecar), plug the iPad directly into your MacBook Pro using an official Apple USB data cable to see if a wired handshake bypasses the local Wi-Fi/codec glitch. 
  • Disable Firewall or VPN: Temporarily turn off any active VPNs, custom DNS configurations, or the Mac's built-in firewall in System Settings > Network > Firewall to test if security software is blocking the video stream


More info from Apple: Use an iPad as a second display for a Mac - Apple Support

neuroanatomist
User level: Level 9 (72,871 points)

Oct 20, 2026 9:59 AM in response to amw00

Just to confirm, when I mirror the internal display of my 16" M4 Pro MBP to my 13" M5 iPad Pro, the display mirroring works as intended (the iPad works as an extended display, as well). I can confirm that with my setup, I am able to use the iPad for writing input to my MBP (screenshot on Mac was annotated in Preview by writing on the iPad).


amw00 Author
User level: Level 1 (4 points)

Oct 19, 2026 4:43 PM in response to neuroanatomist

Thanks for your time and information I will go through your advice thanks

Originally posted at discussions.apple.com/thread/256379213