File Upload Widget - Valid File Extensions not working

Hello guys,
i’m using the File Upload Widget with “valid file ext = pdf”, see screenshot.

If i run the workflow on the server, i can choose any file to upload.

How to force only upload pdf files ?
greetings
Tim

Hi Tim,

Which version of Knime AP and Knime Server are you using?

Thanks,
Zack

Hi Zack,

Server 4.10.3.0063-565e8baa7
AP 4.1.3

Tim

Hi Tim,

Can you try specifying a default file that is in the .pdf format? Please let me know if this fixes your issue.

Thanks,
Zack

Hi Zack,

something like this?:


Sorry not working… :frowning:
Greetings
Tim