For the past six months I have had Dropbox on two Windows 10 PCs with many files regularly being created/modified and synced within the Dropbox folders of both of them. But for the past two weeks they will both work fine for many hours and then one or other (or both) will come up against a blocked sync process, i.e. Dropbox will report "Syncing N files" and that value of 'N' will never change however long I leave it. If I click "View sync issues" it just reports "No errors". The problem will go away, at least temporarily, if I close Dropbox down and restart it again.
I have spent hours with Dropbox support and they have suggested a great many things to try but it feels very much like they're just guessing. So my question is not so much "what could cause this problem" - I already have a distressingly long list. Instead my question is - could the use of some utility like Process Explorer or some such, to actually diagnose the problem without all the guesswork?
.dropbox.cache
folder within your Dropbox folder and deleting the files it contains then restarting Dropbox?