Lightroom Classic: Stuck on syncing. Rebuild sync data did not help.

Because syncing, even without your issue, slows down Lightroom, I made the following change. I have a SSD dedicated to my Lightroom library and catalog. Then once a day I use software to sync it to my Google Drive folder. So Lightroom is not impacted by synchronization to the cloud and I still have a cloud backup.

Deleting the sync.lrdata may help. Or it may count down to the number that is stuck. So a couple of other tips....

Try signing out of LR (Help > Sign Out) and then restarting LR while signing in again.

Also, see if you can identify the photos. It may not really matter that LR is saying they haven't synced properly. Alternatively, you may be able to remove them from the synced collection, clearing the message, and then add them back again.

Deleting the sync.lrdata may help. Or it may count down to the number that is stuck. So a couple of other tips....

Try signing out of LR (Help > Sign Out) and then restarting LR while signing in again.

Also, see if you can identify the photos. It may not really matter that LR is saying they haven't synced properly. Alternatively, you may be able to remove them from the synced collection, clearing the message, and then add them back again.

I've just run into the same problem and been trying everything for a week. It's now affecting my work and I need help.

I've also Rebuild Sync Data three times this week as after each day the "Syncing xx xxx photos" has stalled.

Now I generated the same Diagnostic Report as suggested to Kristian Karaneshev and uploaded it here: https://www.dropbox.com/s/ndgaw26lqqqwqln/LrSyncDiagnostic.zip?dl=0

Could you take a look on it soon please, ragrawal?

I have 45.558 photos on All Synced Photographs and 234.930 photos in my LR Classic Catalog.

EDIT: I should add that previously I've run into same problem once before Rebuild Sync Data did solve the issue. This time prior to this I had to restore a previous LR Catalog from a backup (there had been a keyboard shortcut misstep that I didn't see soon enough and closed LR before realising I've accidentally changed all 3-to-5 star photos in my LR Library to 1 star ratings).

Same problem here... 1578 images not synching or pending... Tried everything mentioned here. 

After using several cloud services (Amazon, Dropbox, Google and Microsoft but not Adobe), only one of them consistently works for me. All except Google both drop and duplicate files. So my current solution is to have a separate folder for Lightroom which I periodically sync (using Second Copy 9) to a folder within the Google Drive folder.
  

1. Amazon does work fine for large commercial accounts but not for little guys like photographers. 
2. The Lightroom folder can be directly sync'd with Google One (formerly Google Drive) but each change in Lightroom (such as moving a slider) results in a change within the Lightroom folder. The file gets locked for a second or two which really slows down editing operations. I also put the Lightroom folder on a separate SSD mounted in a PCIe slot which makes accessing the files faster but this performance improvement is only noticeable with batch processing. 

I have the same problem Lightroom Classic doesn't sync. I rebuilded the sync data several times but no success.

I see several different sync numbers.

On top of Lightroom classic 83.891 pictures will be sync. In the sync folder I see 14.487 pictures and in the settings area I see 101.848. Let me say in the cloud with Lightroom CC are >106k. And I want to mention, that in settings uploads/downloads/waiting are shown with 0...

So who can help with this problem?

So after about an hour i see 83,891 pictures waiting (Ausstehend) but nothing happens...

After waiting for a long time the log in the settings showed an error about not unique names of an album. I renamed the album online via the browser. Now the sync seems to work. Let's see in a few days, if its done then.

Hi everybody,

I am have the same problem as described in this post; unfortunately, I don't see any solution so is it a way for Adobe support team to provide help on this please ?

The diagnostic report is here:

https://www.dropbox.com/s/68fx4m5uzmq4l7m/LrSyncDiagnostic.zip?dl=0

I just migrated my data to a Macbook Pro 16", may be an explanation ?

I am also surprised because lightroom is not as fast as expected on this new powerful machine (was almost unusable on my Macbook Pro 15" 2013).

Maybe something is wrong with my catalog ?

I would really appreciate any help.