Cannot update/reinstall the game

[Olahorand]

Bug Report Number:

1

Since about April I failed to update the game and claim the anniversary goodies (and never had the time to dig further down).
Whenever I start the launcher, if freezes downloading client_local_something file.
Formerly for German version, after uninstalling and attempting to install now the English version hangs as well (file 26623 of 26634 according to todays latest attempt) at 24% progress bar.
OS: Windows 11 Pro German version.
I paused the realtime antimalware scanners (Eset and Malwarebytes), but no change either.
Running As Administrator does not change the behavior either.

Any ideas how to solve this?

 

[Olahorand]

More attempts made: On my non gaming laptop installation went through, although the launch screen, if it loads at all, displays no character on the server.
Attempted installation via Steam on my PC - got stuck at English language file.