My Mac is stuck at "Syncing" after updating my OS.

Hey muestik, I was able to locate your ticket number on our system.

I had a and I completely understand how frustrating it can be to wait for a resolution.

I want to assure you that our specialized team is actively looking into this. Since this issue requires advanced tools and expertise that aren't available to us here on the community, your case is in the best possible hands with them.

While we can't intervene in their process, I've gone ahead and raised the priority of your communication to "High". In any case, we're here to support you and answer any other questions you might have.

Thanks a bunch!

Thank you for your response! I appreciate that the issue is being looked into now. Hoping for a quick resolution, and I truly appreciate your support. 😊

Don't even mention it muestik! It's our pleasure. 😇

Feel free to update the thread, and let us know more about the case once you hear back from our Team. 

It’s unbearable. The support team gave me a solution that only made things worse. Now I no longer have access rights to my files. Every time I move or copy something, I have to enter the password—this can’t be serious! I haven’t been able to work for four days, and support isn’t responding anymore. I’m furious and completely outraged by how this whole situation is being handled. You can’t just release such a massive bug as an update!

Hey muestik, thanks for the additional info and thanks for your feedback here.

I understand that some issues can be very frustrating, but since you're already in contact with a specialist, I'd suggest expressing any concerns or questions to them.

Since the priority of your ticket was raised, your concerns will be addressed the soonest possible so you can get to the bottom of this.

Again, apologies for any inconvenience.

Here I just add a new piece of information, which might be related to this issue.

I'm having the same problem right now after upgrading macOS to 15.4.  But, the sequence of events was a bit different:

1. I just noticed that online files under Dropbox were not available: Filenames were there but trying to open them failed with various strange errors like "time out" and "unknown error 60".
2. Then, I noticed that Dropbox was stuck at "Connecting Components".
3. I restarted the machine, and it was now stuck at "Syncing..." without showing the number of remaining files.
4.  Finder > Get Info on Dropbox showed the number of bytes and the number of items under "Size" . . . Looked fine.
5. I finally bit the bullet and logged out of, and logged in to, my Dropbox account.
6. Then, Dropbox first went "Indexing #### files" and now doing "Syncing #### files".

I hope this will end well.

At the moment, I'm not asking for help. I just wanted to report this new "Connecting Components" error.

Hey ryofurue thanks for the heads up, and for keeping an eye out!

I'll be one post away if you need any help! 🤓

Unfortunately, I may need help.

After the last message of mine, Dropbox went down to "Syncing 5 files".  But then, it went into a sort of cycle with "Syncing N files" where N kept changing in 4 < N < 20. In the meanwhile, the Activity Monitor indicated that "fileproviderd" kept using ~140% of CPU. It was as if some process was updating some files under Dropbox.

I quitted all apps except for Activity Monitor. Nothing changed.

I then restarted the machine. Dropbox is now "Syncing ##,### files", where "##,###" is a 5 digit number. 

Initially, it was counting down, but now it's cycling through "16,460",  "16,454", "16,452", "16,451", . . ., "16,450".

"fileproviderd" is using ~110%.

I'll now shut down the machine and I'll come back in several hours.

If I recall, I had opened a ticket on my end for you, in order to have a more in depth look about this issue with our Specialized team, right ryofurue? 

Was the issue ever resolved on your end? If so, when did it come back?

> Was the issue ever resolved on your end?

Yes.

> If so, when did it come back?

Yesterday evening. The night before yesterday, I initiated OS update and went to bed. Yesterday I didn't use this machine until evening. Then I realized the problem.

Last time, your Specialized Team suggested that I log out of Dropbox and log in again. I did that and that actually solved the "Syncing"-freeze problem although it took a lot of time "Indexing" and "Syncing".

This time, I logged out and logged in again. Then "Indexing" went through and "Syncing" went down to 5 files. Then cycling started between 5 and 20.

I restarted the machine. Syncing started from about 30,000 files (if I remember correctly) and went down to 16,450 files and then cycling started around 16,450 files.

This time, I shut down the machine and turned it back on. 30,000 files to 16,450 and cycling. That's where I am right now.

fileproviderd keeps using 140% CPU and keeps writing to the disk very slowly. "du -s Dropbox" indicates that the disk usage is gradually increasing.

On the Finder, some files still have the empty cloud icon even though they are under a directory which is set to "available offline".

As I'm writing this message, I've tried to see the contents of some of those files. Some of them were sync'ed right away and some of them failed.

As if that triggered something (although that may have been coincidence), the number of the files Dropbox was syncing rapidly went down to ~9000 and then shot up to ~20,000. After five minutes like that, going up and down, Dropbox finally reached "Your files are finally up to date".

Everything seems to be back to normal.

So, perhaps the number of files being sync'ed has been misleading. Login followed by logout may be the ultimate cure of these errors.