File Download Widget gives unknown file!

Hi Knimers,

I recently noticed that the File Download Widget produces an unknown type file if you click on the download link too quick. Maybe the file has not been prepared yet.

If you wait a few seconds and click again, the Excel file is correct. This gets our users confused.

Is there a way to tackle this. I was thinking about 2 possible workarounds:

  • Display a ‘Wait’ message in the browser.
  • Display the link after a wait node for a few seconds.

I am not sure how to implement either of them.

Any suggestions are welcomed.


Hey Denis,

what versions of KNIME are you using (HUB/Server and Executor). We fixed a very similar problem recently (don’t remember exactly in which version). Can you reliably reproduce the problem? Is it only if the to be downloaded file is large?

Greetings and thanks,

1 Like

Hi Daniel,

we are using KAP 5.2.3 & Knime Server (?version).
The issue happens also with small files around 70kb.


Hey Denis,

I tried to reproduce the issue, but for me it always seems to work. Are you able to share the workflow or a minimal example workflow where this happens?


Hi Daniel,

notice I am using Microsoft Edge as browser.
Are you doing the same?