C:\Users\yourusername\AppData\Local\Temp\I1(random Number here)\InstallerData\Disk1\InstData\Resource1\ extract resource1/ to the same folder and do a search in this file for Bethesda.net_launcher
mine was in C:\Users\yourusername\AppData\Local\Temp\I1XXXXXXXXX\InstallerData\Disk1\InstData\Resource1\D_\launchers\winlivepub but that's not 100% the same all the time it seems, then move the entire thing out of the temp section and download away
C:\Users\yourusername\AppData\Local\Temp\I1(random Number here)\InstallerData\Disk1\InstData\Resource1\ extract resource1/ to the same folder and do a search in this file for Bethesda.net_launcher
mine was in C:\Users\yourusername\AppData\Local\Temp\I1XXXXXXXXX\InstallerData\Disk1\InstData\Resource1\D_\launchers\winlivepub but that's not 100% the same all the time it seems, then move the entire thing out of the temp section and download away