May I know what is the error? Please help to share a screenshot with the error message.
Do you download from this link: https://fpgasoftware.intel.com/soceds/19.1/?edition=standard&platform=linux
I am able to download it though. Try to login with your MyIntel account or use a different internet browser (Try using Chrome incognito mode) and clear cache.
p.s. Don’t forget to Reply, and Select the Best Answer. :)