Endnote an error occurred while trying to download the attachment

I wanted to sync the endnote on my pc.

I have totally 1149 references.

I think original my pc has 1088.

Because it does not sync. So I delete the Endnote X9 and reinstall it.

Right now an error occurs every time it syncs to 1088.

“an error occurred while trying to download the attachment. Please try again later.”

I have tried to clear preference, uninstall and reinstall, restart, but it never works.

Please contact Technical Support directly

1-800-336-4474 option 4 then 1



We are here to help whenever you run into issues.

Thank you, surprisingly, the problem is gone automatically today.

And it happens again today… I should contact your technical staff

Hello Li Mengmou,

I would contact Technical Support and they should be help troubleshoot why you are getting the error.

They can reached the following ways:

1-800-336-4474 option 4 then 1



I had the same problem yesterday. I asked for technical support and they let me clean the trash. Unexpectedly, it syncs successfully again. You should try cleaning the trash bin if there are too many references in there.