Download failure when downloading LR6 to to my second computer

I tried to download LR6 standalone version to my second computer three times today. It seemed to run normally, but everytime after the download was finished I got error message "Failed". The second computer has Windows 8.1 64bit system and it is actually newer and more capable than my nr.1 computer, so there should be no problem. I purchased LR6 in April and have had it running only on one computer so far so I should be able to to download it to this second computer also.