Dropbox is stuck syncing after an update, what can I do?

Nope, no change. Endless "Synching..." without any updates appearing on other computers or on Dropbox web.

Installed this new version yesterday, but no progress. Still "Syncing..." since 16th of January. Tried all @Daphne 's fixes, none has worked. My ticket number is #10206179 

Thank you all for the updates. 

S34W0LF I took over your ticket to investigate personally and I will include more members of my team to the case as well. Thank you. 

Well, I'm kind amazed.

I came to my computer earlier this morning after reading about the 89.x update.  Dropbox wasn't even running on my computer, so I launched it to see what version I had.   It was 89.x, and at startup it looked like the last version, thousands of file indexing and downloading. 

It stayed that way until about a half an hour ago, then I had a major burst of system activity and those index/sync numbers started to come down, and finally I'm back to showing perfectly in sync.

I sure wish we had an explanation as to what was wrong to begin with -- the release notes for 89.x mention nothing about the problems I and others had.  Obviously something significant broke and got fixed.

89.4.278 installed. Daphne 's fixes did not resolve issue. Multiple machines affected and stuck at different upload/download counts. Two machines not affected. Ticket #10198542

I too would like to add that after an automatic update to 89.4.278, followed by continued crashing, and then a reinstallation of the same version, the situation has stabilized and Dropbox has now stayed in sync (and updates changes) for over 24 hours. The memory consumption is higher than before but it stays at least on the same level instead of climbing continuously.

Down to 3 or 4 files syncing, but no actual files synchiing in explorer so those are a mystery.  It works pretty well now, my fight is done.   Good to see that the devs have gotten close to fixing whatever the problem was.

The real story seems to be how help desk handled it, running through the playbook rituals but without revealing the true facts on the ground (ie: buggy release).  Dropbox, you really could do better, we deserve that for the money we pay. 

Thank you for posting about this DanielJ.

AOW1 Located your already escalated case, so since you already have specialized members of my team working with you there I am unable to provide extra steps on my end. However, I see you responded there today and I added feedback and your latest update to 89.4 for my cooleagues to follow up as soon as possible.  

Fiona AOW1 I also had "my case turned over to a specialized team"...like days ago. Yesterday I asked them if they could reply. I got an answer :D The general copy paste thing, how we can help you, etc. Welcome to the dropbox refugee club!

A further update -- I had to log off this computer and log back in, and when I did Dropbox began a total resync cycle (?) again -- a ton of disk activity that's been going on for nearly an hour, even though when I logged out it showed in sync.  There's no apparent networking activity, so I'm guessing this isn't a complete download type resync, just Dropbox local indexes being recreated (again).

So I guess I would have to downgrade my assessment from "appears to be fixed" to "appears to be kind of fixed", as the activity shows something is happening and I assume if it ultimately finished before it will finish again.