I am new to DNN. We want to export all the files in the portal. We tried export using super account. Is there any other approach to achieve the same?
There isn't a way to export all files from the portal within the actual DNN Interface.
Your best option is to simply copy the directory from the site, the normal location on disk for these files is the /Portals/{PortalID}/
folder. Where PortalID is the # of the portal.