If the link is not working, try using the right mouse button/save link target as...
You can only log in once at a time on a download server. If you want to download a lot of files at the same time file faster, use bittorrent :)
Important : This file URL is unique for you, if you want to link to this download, you will have to use: https://www.gamersyde.com/video_watch_dogs_w_d_gtx_1080_fe_msaa8x_txaa4x-37416_en.html