Issues with iPhone sync from MacBook after iOS17 Update

Before reading this, I did a full restore of my iPhone (which you all know can take HOURS) and it didn't fix the sync issue. I turned off blue tooth - and voila my sync is happening. I wish they would fix this bug.

I would recommend (as it worked in my case): make sure iclouds ID are correctly set.

I had my iCloud ID AND a previous one (which now uses my wife) for stores (music & apps).

I logged out from both in the iPhone and the MBair and re logged in, so I had a clear view that IDs were working properly where they have to be. I was recommended to do so by apple online support chat.

I had to finish the chat and the systems didn't sync yet. I went home and:

I re-started both devices, and the syncing worked gracefully.

It was like there was a mess with IDs (actually it wasn't) as I am evolving systems and backup copies long ago (years I mean)… and the "restart" seems to put everything I had double checked on its place, and understood the computer and iPhone were friends. I can run with MY music ;)

I have also struggled with this and have used the suggestions above. I am just trying to sync music. I have an iPhone 15 Pro on 17.3 and a new iMac with 14.3 running. The problem started in the fall. I also have an up to date Apple watch series 8.

I have found that music will sync properly when connected to the computer if I turn off the Apple watch before I connect the phone. Bluetooth on the phone does not have to be turned off.

This discovery certainly improved the situation, but there is obviously a bug which needs a fix.

After the Sonoma 14.4.1 update and the iOS 17.4 update all of my issues were resolved. I had been turning off my always up to date Apple Watch to get the sync to run for months. Now the sync works properly every time. For me this issue is resolved. I did not determine which update fixed the issue. Possibly both updates were needed.

I was having the same issue and tried the suggestion of toggling off the Bluetooth and it worked. Hopefully there is a fix soon so we do not have to do this every time we back up and sync.

Yes, unpairing my iWatch solved the problem. Thank you very much!

Same problem here. iPhone 14 Pro Max Was syncing fine till the 17.3...? update.

Hung up on #4 "Determining songs to sync"

17.4.1 did not help.

Different cords, Rebooting phone/computer, Resetting phone, Turning off Wi-Fi/Bluetooth/Airplane mode, disconnecting my Apple Watch - None of these or combination of these worked.

But my wife's iPhone 13 running 17.4.1 Synced Itunes/Music blazingly fast on the same Macbook Pro & cord...

After 2 days of all this and reading a lot of posts. I dug out my old iMac running the Catalina macOS and hooked my 14 up to it, using the same cord and before & with all services active, the system said I had to install a single update but after that my 4K+ music library synced in less than 5 mins.

Once that was complete I was able to connect the 14 to the Macbook Pro Max and sync to that Music library, which is the more current one.

What I learned form this:

1. Newer is not always the most QC'ed...
2. I will no longer check "Automatically Sync when this iPhone is connected". This prevented me from making any changes to the Sync dialog box for testing.
3. Try Simple solutions first
4. keep old tech around

A lot of what I read said that a discrepancy between the music on the phone and the libray "could" cause sync issues. For what is worth the last thing I remember changing directly in Music on my phone was to delete the Free U2 album.

Not sure if it was that or the update.

Turning off Bluetooth on my iPhone fixed the sync issue. Worked like a charm.

THIS (turning off bluetooth at the toggle and not from the control center) was the trick that got mine finally working after several weeks. Thank you partofsydir ! Thank you Thank you!!!

Fix: on your iPhone, toggle-off Bluetooth, followed by plugging your iPhone into MacBook/iMac and select sync - p.s. if you have an Apple Watch w/iOS 10, this may be linked to cause of issue. I hope this helps!

The fix of toggle-off iPhone bluetooth worked for me to sync to my Mac...Thanks!

Turn off the “ Automatically sync when this iPhone is connected “

wait a sec and “ sync” at the right bottom

@UltraMuyGnarly This worked for me! What kind of nonsense is this, though...to have to turn off bluetooth to get your phone synced? Hmm...

Unpairing my Apple Watch worked for me.

Hey there!! I totally understand your frustration!! When you are toggling off Bluetooth, make sure you are going into the Bluetooth settings and actually toggling off the Bluetooth from where you can see everything that's connected to Bluetooth. NOT the toggle where you swipe down the screen and Bluetooth is next to the WiFi button. It has to be the toggle switch. Hope this works for you. I was doing the button and it wouldn't work but when I did the toggle switch, BOOM, success!!!