This fixes it. Thanks.Left-click on the title bar (in my case my email address was visible there in deep red) and a menu pops up that has a language option near the bottom. Select english and restart.
Steam bug still here too...
View attachment 128745
I know there are workarounds, but that does not make it any less of a bugIf it's the same as yesterday, try launching without using steam. Use the start menu/desktop shortcut.
Left-click on the title bar (in my case my email address was visible there in deep red) and a menu pops up that has a language option near the bottom. Select english and restart.
I can confirm that this has resolved the Launcher 404 problem for me too.
I think it has to do with the operating system language not being english (mine is dutch)