The operation can’t be completed because an unexpected error occurred (error code 100034)

So I'm trying to copy to iCloud Drive 5.83GB of data from an external 10TB hard drive. I'm already using 104.34GB of 2TB. I'm on a 2018 MacBook Pro running Sonoma 14.1.1. Mac specs are: 2.9 GHz 6-Core Intel Core i9, 32 GB 2400 MHz DDR4, Intel UHD Graphics 630 1536 MB. What is this error, especially when I have more than sufficient available space on iCloud?! Thanks!

MacBook Pro 15″, macOS 14.1

Posted on Nov 9, 2023 12:12 AM

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Why is iCloud drive so buggy and unstable? I originally wanted to move away from Dropbox and finally save some money. I have the AppleOne subscription, so with 2TB+ that should have been no problem. But even on a new and clean MacBookPro (2023) after setting up iCloud Drive and sync (everything to disk, not optimising storage), I just get errors over errors. Very generic errors. Reboots don't help, iCloud says it's in full sync, but moving folders or files, or copying data out of iCloud drive doesn't work properly. My MBP has enough disk space and still 300+GB available. The same behaviour shows up on 3 other macs that I'm using, so it's not working on multiple devices. This device just came in brand new!!! One example is here, while trying to copy a folder from iCloud drive to another local folder: "The finder can't complete the operation because some data in '' can't be read or written." (Error Code -36) Well Apple, what do I care? The data is in your cloud, so if you can't read or write it, go and get it from somewhere. This is by far, the worst implementation of a cloud file storage that I have ever used. Another one, trying to download a newer folder from cloud to disk: Well, what should I say, my Internet uplink is fine and everything else works. I'm not behind some fancy firewall or weird WAN uplink, it's basic home Internet and it's consistent behaviour at other locations and other WAN uplinks.
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Error code 36 I have read the previous discussions on this site re the Code 36 error when trying to move folders out of iCloud drive to an external hard drive. I notice that sometimes people have jagged a solution but other times they haven't. I am reopening this in case anyone has found a very good and simple solution. I have been having the problem since I put my Desktop and Documents on to iCloud drive a couple of months ago. I can move a single file from iCloud Drive onto a USB but attempting this with any folder of Documents on the iCloud drive will give me the error message: "The Finder can’t complete the operation because some data in “” can’t be read or written.(Error code -36)" When working on my Macbook Pro with any of the files individually there seems to be no problem with opening any of them or working on them. With the help of Apple support, I have done first aid on the disk, come out of iCloud drive and back in again (this took 48 hours), reinstalled Monterey 12.6.5, repaired permissions in Terminal, tested a different USB, gone into info in the folders and changed the permissions to read and write. Nothing has sorted out the problem. I have even shared a folder with my spouse who has his own separate iCloud account, and on his Ventura-run Macbook Pro, can quite easily move the folder to the same USB I was using. Now I have a mid 2015 Macbook Pro with Intel Core. It has not been offered the Ventura install and so continues on Monterey. Should I just move to new Macbook Pro so I can run the newer software? And in starting with a new Macbook Pro, should I migrate the old Macbook Pro as it is or keep working on trying to fix this problem on Monterey in that machine before I migrate the data? At the moment I am waiting for the engineers of Apple to come back to me with some more suggestions of fixing the problem on my old machine. iCloud Drive is otherwise working incredibly well for me and I don't want to cancel it. Has anyone had any more luck or suggestions since the last discussion here in Feb 23.
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The operation can’t be completed because an unexpected error occurred (error code 100034)

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