Couln't download. Remove incompatible characters from the filename

Got the same problem for the first time on dec 21, 2023. Never had this issue before although i use db for over 8 years now. All files with issues are old and have been synchronized for weeks/months/years without problems. 32 issues, mostly with ":" in file name. db, pls fix!

I've been using Dropbox for 10 years and have had an occasional issue but never this one. And I  feel compelled to join this long-running thread to report that it just started happening yesterday. The filenames look normal, and like many others report, these are old, old untouched files. E.g. these ones are from a Headfirst Java course. I've deleted some of the files on the machine where I'm getting the error, but as you can see in the screenshot the complaint is about downloading them, so maybe it's from another machine. This machine is a Mac, which I believe should be able to handle files starting with a dot or ending with a tilde. Seems like a serious Dropbox bug.

Also got 50 sync issues  since this morning : invalid characters in filename, what has changed (files are in my db for over 5 years now !!!) ?!?

This remind me of when mac os icons disappeared after a dropbox update...

version : 189.4.8395

Same issue here! 654 files with syncing errors due to incompatible characters that had been in Dropbox previously. No way to rename en masse (a feature that OneDrive has). Not interested in going to each file individually to remove the character. The character in question is a ":" in the name that was not there previously. Dropbox needs to add a feature where it asks you if you wish the rename the files and replacing the offending character with an underscore or something. 

This has been posted previously in different ways but I think it needs to be pursued a bit more.

I am tired of continuing to see the "red notification" on the dropbox icon in the menu bar (MacOS). The notice continually reports that it cannot sync files, but even though it shows you the option to locate those files, clicking on the link does not do anything, even when you have set up preferences to see hidden files. Therefore, you cannot resolve this and you continue to get the error message. There needs to be a way to stop the error message, but one cannot resolve it if we cannot find the files it seems to be referencing. 

43 sync errors this morning! All due to tilde in filename. Also on version -8395

Hi brunoyouknow, thanks for bringing this to our attention.

Could you provide more information about what you're experiencing exactly?

A screenshot would help us greatly. This will help me to assist further!

You click itYou see this in your menu barIt shows this, and you cannot do anything about them. Can't find them, can't delete them.

Thanks for the images. Do you have any programs or apps in your Dropbox folder, or package files? It's possible that these files are inside and causing these sync issues.

Do you see any sync icons in your Dropbox folder that aren't green or showing a cloud icon?

Just to add on, I was a friend of Drew Houston's in college and one of the first 100 users of Dropbox, and I've been using it the entire time (15 years or so).  I've never had a significant issue and never needed customer support (even with the Dropbox folder moving locations due to macOS limitations, sometime in the last few years, and online-only files being a little janky).

I have at least 500 sync errors now (I'm not sure if it caps the list at 500), in version 189.4.8395, due to file names ending with tilde.  This is crazy to me.  I don't use Emacs anymore, so I probably could write a command-line command that removes all those files.  But long-time users will eventually move away from Dropbox if it can't sync files with tilde in the name.  That's not reasonable.