This subject line has come up before, but my problem is not caused by filenaming errors.
I have dropbox on four computers; everything syncs fine except on one laptop: the laptop will update files that are edited on other machines, but anything I edit on the laptop will not sync to the desktop machines. This includes file edits, moving files/folders around and folder/file renaming. None of the relevant files are shared with other people, only with my account.
I've checked everything to do with firewalls and permissions, all of which are as they should be, reinstalled dropbox, logged out and in, restarted computer and updated operating systems. There is plenty of space in the Dropbox Pro account and on the laptop hard drive (and the hard drives of all other machines). All machines are running MacOs Ventura 13.7.4. All are correctly connected to the internet and have LAN sync enabled.
Some of the sync icons on the laptop show the blue active circle, but those are files that are updating from the other machines. Some files on the laptop have the red x and I cannot get them to upload to the cloud. I have tried making all the files offline only, to force them to sync to the cloud, but those that do show the cloud icon, are still not updating to the other machines. I have tried making the entire dropbox on this computer 'offline only', but still none of the files are updating/uploading.
There are no error messages, but the activity monitor seems to be permanently 'updating files'; only a few MB, but even leaving it chunking along overnight does not clear the updating queue.