Today, I tried to launch Battle.net for the first time in a week or two and it gave me an error message which read “Failed to Download DXVK 0.52 (Default)”. What can I do about this?
First off go Dodgers 
and second what version of Lutris are you using? This has been fixed since 0.4.20.
Never mind. I fixed it by switching from version 0.52 of DXVK to version 0.60.