How to upload folders?

In one rather old NC, I can upload whole folders at once, this work by draging the folder from selection dialog (windows explorer) into the area of the NC files and the folder incl all files will be uploaded.

In the new NC27, I am not able to upload any folders, when I do the same as above, the folder sign appears to have kind of ‘stop’ sign attached to it and no upload will take place.

How can I upload folders when operating from the browser gui?