P: Lightroom Classic: no longer syncs completely, successfully.

@emilz45253183 

You’ve posted to an ancient thread. It is highly unlikely that the issue described in this thread, though not impossible, is the same one you are currently experiencing. Rather than resurrect an old thread that is seemingly similar, you are better off posting to a new thread with fresh, complete information, including system information, a complete description of the problem, and step-by-step instructions for reproduction. 

If the issue is the same, we will merge you back into the appropriate location. 

Thank you!

This issue had been around for years now. It is utterly annoying and I cannot believe that Adobe is unable to fix this properly so we don't have to constantly reset the sync and go with all sorts of workrounds. I uestion the value of some new features when bugs like this are left unresolved for years!

Ok, tried another of the suggestions here. Renamed the catalog. I went from 3528 files down to 8, but it then got stuck again. I went into Lightroom on my phone and deleted the offending images from Lightroom for mobile. It then staerted working again, and sync went back up to over 400, but is coming down again. Seems to keep finding more photos without lens data though. Now my old 12mm manual lens that used to have lens data for doesnt. so all images taken with it are causing it to pause at 7. 

Nope spoke too soon. Error has kicked in again... I will create a new post. 

I know this is an old post, but i am replying here as it is the top search hit for the issue i had. 

No photos syncing

No synd acticity

No sync errors

I checked what images were in my synced collections that had no camera/no lens information. I had several photos from different sources (old scanned jpeg, old iPhone and new Sony photos) - once I removed them from the collection, my collections began syncing. 

The issue only arose when I upgraded my computer and needed to migrate my catalog. Had not been an issue with any of those files until now. I'd posted one of them from Lightroom on my mobile to Instagram only a few weeks ago. 

But all fixed now thanks to the clever person who IDéd the unknown lens issue. Just frustrating to see it is still an issue in 2023.

PLEASE NOTE:
I have started a new thread for this. I don't seem to be able to delete this posting.

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I am having a problem with syncing and found this thread on the forum.

Background:

My sync’ed images are used in Adobe Portfolio, Express and a number of standalone collections shared by Lightroom Links.

About 10 days ago I tried entering keywords on new images and didn’t notice that my click on “Click here to add keywords” didn’t connect; I carried on typing causing the screen to change modes (presumably as I typed short cut keys). I recovered back to the Library screen, but noticed all my keywords were gone for the entire catalog. (I was deleting keywords in the new images) Then I spotted the SYNC METADATA on the right side of the screen was ON!! I never use that, but somehow in the mishmash of typing I must have clicked on it unknowingly.

To get my keywords back I copied my last catalog back-up (the full catalog set of files, not just the zipped back-up) When I clicked on the lrcat file it said corrupted but LrC fixed it.

Keywords were back so I though all was OK and have been working with the (fixed up) catlog for about a week.

Now I have just noticed that NONE of my collections are showing as being sync’ed (The zig-zag line next to a synced colllection are all gone) and the top right syncing activity dialogue box is showing 14,874 syncing.

(I don't think the problems vis-a-vis the keywords has anything to do with the syncing issue as I had closed LrC a few times after resolving the keywords issue without being told of on-going syncing in the LrC close dialogue)

Following your instructions on page 1 of this thread:

I went to your step 1, no issues showed

I went to step 2, let the syncing run for 60 minutes - no change in numbers

I went to step 3, nothing showed.

I have not tried changing the synch.lrdata to “old” yet. 

I have some zipped catalog back-up files from late December

See screen grabs below

I am on Win 10, running LrC ver 12.1

@gals94340254 what did you do? Just quit LrC, renamed the Catalog and reopened? 

Thanks...

It's been days and I still havent been able to correctly sync my pictures from the cloud with LrC, it's a pain, really... Howcome Lr works so well and LrC is a mess? 

Step (3) - renaming the catalog file seemed to have do the trick for me! thank you!

I still have the same problem with the latest update... I have 20,000+ images, had the problem before (fixed by renaming sync.lrdata) and now I've tried everything posted here with no success... last week it all worked fine, but today I imported some more photos and it's been stuck syncing for over 5 hours... I thought if I removed these new files from the sync collection it would go back to normal but everything seems to be stuck.

Hi, Can you share the diagnostic logs with me.