some iCloud data isn't syncing

Same issue. When I enter a passcode for other iPhone I get the alert:

Title: Verification Failed

Message: There was an error verifying the passcode of your iPhone.

I am not able to access:

Messages,

Photos,

Passwords

And everything else that other people on this thread mentioned.

I do not want to obviously delete messages and photos, so I have no choice but to not sync my iCloud account until this issue is fixed.

@Apple please fix this issue. This is unbelievably bad.

Settings some data not syncing heath & maps. I have entered password tapped resume syncing spins and returns to resume and still showing red dot on Home Screen settings

I call Apple support and they told me that

we have to make backups, I have 2 iPhones

13 and 14 Max Pro and I have to reset

that notification in both phones

3 or 4 times a day.. Is time for Apple to do something about it.

Have a similar issue. Message reads “some iCloud data isn’t syncing “ and when I resume syncing it asks me for my iphone passcode and then my ipad passcode. I did that. Then it asks me for my passcode on my old iphone which I do not have anymore since 2 years and no clue what this passcode was. How the **** is that even relevant for syncing icloud on my devices in my possession? This is so frustrating!

Great clarification: did you do a reset of all settings? Network settings? (there are 5 different "reset" options, plus "delete all eSims" and "erase all content and settings."

Which one did you use?

Unfortunately it didn’t. I am losing my mind. Passwords, texts, and health all gone and nobody at Apple can help.

I signed off and on and it’s still the same. :(

I came across the same issue after setting up a new iPhone 15 Pro and migrating iCloud data from iPhone 13 Pro both running latest iOS. Even had the same issue when we tried a different iPhone 15 Pro. Problem was solved when we restored the eSIM (i.e., the phone number) back to the old phone, but left the new phone connected to wifi and my iCloud account. We were then able to click the button to resume the sync and it did it very quickly as was really only the Keychain data. Then we moved the phone number again to the new phone. All working great now.

I’ve just had this problem and what fixed it for me was going back to settings on my old phone, where iCloud updates were being blocked because I had to accept the new terms and conditions. As soon as I did that I was able to get past the recurring messages and complete the sync.

Had same issues, worked it for 4hrs (dirty loop), then msg apple apple teir 1 couldn’t help, then teir 1 offered apple advance call back, i was too hungry and tire..lol.

Google search led to: give Credit to “foneDog’s blog” i can’t post link kinda risky. Am sure if you search you’ll find it.

SOLUTION:

Do iCloud Backup (iCB) manually, then auto (iCB) will work;

MUST BE ON/ACTIVE RULES

Rule #1.  iCloud

Rule #2 Passwords/Keychain

Rule #3 iCloud Backup

Please lmk if that helps, if not what other issue are you having?

I’m having the same problem. Except I was willing to reset all my passwords and pushed I don’t have the code and it didn’t do anything.

I also have run into this- I don’t have a recovery contact so we are trying to set it up. On 2 different devices I have tried to set it up and says I can’t because I’m not using iMessage. I have turned iMessage off 3-5 times and it still says it.

sounds like Apple needs an update

Same for me. I signed out many times from Apple Account, back on, reboot phone, nothing helps. I always get the message about some data can't be synced. If I click there, it spins, but nothing loads.

When I go to settings/icloud/advanced data protection and want to turn it on, it tells me that my Apple-ID needs to update. Then the circle spins, but nothing happens. The same happens when I try to turn on messages in the icloud settings...

I'm little bit relaxed that some other people got the same error and it's maybe related to the Apple Servers which they hopefully can fix quickly ...

I was able to fix this by agreeing to the new term and services of Apple on the old phone. This was just in the main settings page. Once the terms and services were agreed to both phones were able to access ICloud and this error message went away.

Hope this helps.

I'm experiencing this issue across all devices after upgrading to iphone 15 and the newest OS on everything. My health, fitness, wallet, etc. is not syncing and messages and other data is very inconsistent now.

Are you saying that the reset data option truly didn't erase your health or fitness data? I'm still waiting to hear back from apple after a 3 hour call last Saturday but will share this thread with them if you can confirm you really didn't lose anything in the reset!

smtips wrote:

Does Apple Pay attention to these forms or do I need to actually call them because nothing is working for this

This is a user-to-user forum. If you want help from Apple, you'll need to contact them directly.

Genius Bar Reservation and Apple Support Options - Apple