im stuck at update_core
02:19:25:WU01:FS01:Downloading core from http://cores.foldingathome.org/v7/win/64bit/Core_22.fah
02:19:25:WU01:FS01:Connecting to cores.foldingathome.org:80
02:19:26:WU01:FS01:FahCore 22: Downloading 4.04MiB
02:19:27:ERROR:WU01:FS01:Exception: Transfer failed
how to fix this