Dropbox syncing files already deleted from laptop and Dropbox

Hey Kismuntr!

Can you also try signing out of the app, and then sign back in? You can always use these steps. 

Thank you Megan​ 
I did check if any third party apps  are hindering the process and those were sadly not the culprit. I also apply selective sync wherever possible.

The issue here is that my device is trying to sync files that are no longer existing. I deleted those files and the app still tries to sync them. All my other 3 connected devices (android phone, ipad, and acer laptop) synced fine without any troubles. All 3 state: up to date.
It is only that one device where I deleted those files that is stuck trying to sync them (they are deleted both on the device and on dropbox.com = permanently)

Hey Kismuntr​, thanks for the added info! 

Do you have any third party app, proxy, VPN, firewall, security software, or even ISP/router settings that could be hindering the syncing process? If so, then could you try temporarily disabling those? Maybe that will do the trick.

You may additionally keep in mind that it seems that you have more than 300K files inside your Dropbox folder, which could be the culprit for the performance issues you’re having (you can also read more details here).

If I were you, I'd try to remove some folders with the help of selective sync.

I'll be waiting for your updates! 

Follow up (Since I cannot edit my post anymore) here is the result from the properties check:
Size: 1,04 TB
On Disc: 628 GB
Total: 568.532 Files | 10.196 Folders

Hello Hannah​ 
Yes, the sync is still stuck. I checked in with my other connected devices (Android Phone, Ipad, and a second laptop) and all those devices are fine. No syncing troubles. They state everything is up to date. It seems to be just this device. 

I have several hundred thousand files, as I am an artist and photographer and store all my pictures, photos, references, etc, on dropbox.
(I am running a properties check on my Dropbox folder and will update as soon as possible with the exact value).

Here a screenshot of the main folder that contained the subfolders I deleted. The main folder shows the syncing symbol but inside everything is up to date (and the folders I deleted are actually gone, both on this device and on dropbox.com)

Edit:
I got an error message from my device about storage space running low and checked the Appdata folder connected to dropbox. Could this perhaps be connected to it?  
Because the main reason why I deleted all those files was exactly that. I moved a big amount of files, storage space ran low (due to Appdata filling up), I transferred those files to an external harddrive and deleted the folders/files on my device and dropbox.com in hopes it would not sync anymore and not further fill the Appdata folder, it synced fine once, then it began resyncing all those deleted files. And now it seems to be stuck trying to still sync files that are not there anymore.

Edit 2:
Now syncing jumped to 146.239 files. No change in the folders coming from me besides saving the screenshots that I am sharing.

Hi there, Kismuntr, is the syncing still stuck like that?

Also, how many files do you currently have in your Dropbox folder?

The app has been rebooted. Laptop has also been rebooted. 
"Fix Permissions" does not register (no reaction, just the button flickering upon click). 
"Fixing Hardlinks" gave me a prompt that hardlinks are being fixed, but no effect on the stuck sync. 
Rebooted the app again and now it seems to register that I saved new files (the screenshots shared here) but it hops around between the numbers 96.665 - 96.667 with no further progress.

I logged into dropbox directly from my browser (firefox) to check if the files might still be there but I deleted them permanently so there shouldn't be anything left for dropbox to sync/download.

I see, thanks for letting me know about this.

Have you tried quitting the app and/or rebooting your computer since you first noticed this? 

If you did and the number remains the same, you can try fixing your hardlinks and permissions.

Keep us posted anyhow! 

Thank you Walter​!
One last question though. Is the number supposed to be stuck?
Because the app says it syncs but there is no progress. It is still showing 96.665 files syncing/downloading (tried restarting the desktop app, restarting my laptop, same result).
The app itself is sully accessible. I can pause the sync, access settings, etc. It just seems the syncing process is stuck.

In that case, I'd suggest letting the app sync your changes until it's 'up to date and if you still face any issues afterwards, just let us know and we'll take it from there.