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The iPad cannot be synced. An unknown error occurred (-42408).

Does anyone know why an error would be unknown? In this case, I'm trying to sync my iPad Pro from my iMac and am getting the message:


The iPad “Xxxxx” cannot be synced. An unknown error occurred (-42408).


I've restarted the iPad, but it continues to give this message. I recently updated to iOS 14.4.1. Perhaps the new iOS has a problem?


My iMac is running Big Sur (11.1). Big Sur has been restarting on its own every day or so since I upgraded, so maybe Big Sur is just buggy?


Any advice would be helpful.

iMac 27″, macOS 11.1

Posted on Mar 12, 2021 12:24 PM

Reply
1 reply

Mar 14, 2021 11:20 AM in response to James Mcintosh

Hey there James Mcintosh,


Thanks for reaching out to the Apple Support Communities. We understand you're having issues with syncing your iPad with your iMac, and we'd be happy to help.


To get started, check out the steps listed in the following resource that may help: Find an iTunes or the Finder error code - Apple Support


If still having issues after those steps, give the steps listed in this additional resource a try as well: If you see an error when you update or restore your iPhone, iPad, or iPod - Apple Support


While understand you may not be trying to update or restore your iPad the steps listed in the resource above can help with the issue you're experiencing as well.


Keep us updated on the results


Take care!

The iPad cannot be synced. An unknown error occurred (-42408).

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