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Level 1

13 points

Updated iMac to Big Sur and now cannot connect it as external monitor to MBP

I updated my 2014 iMac 27" to Big Sur, and now I cannot connect it to my 2016 MBP(running Catalina) as an external monitor. I tried command+F2 and nothing happens. There is no option for external display options on my MBP either. I have connected the iMac as an external before using different OS on each computer. Is anyone else having this problem, and is there a fix for this?

iMac 27″, macOS 11.0

Posted on Dec 13, 2020 10:46 AM

Best reply

Malcolm J. Rayfield

Level 7

22,981 points

Posted on Dec 13, 2020 8:45 PM

Use your iMac as a display with target display mode - Apple Support

"Target display mode requires macOS High Sierra or earlier on the iMac used as the external display. It does not work with macOS Mojave or later."

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Updated iMac to Big Sur and now cannot connect it as external monitor to MBP

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