hi @Exmerald_0 ,
Sometimes this error occurs due to protection from Windows.
There is a known problem where Windows 11 wont download or even allow UEFN to login on Windows 11
UEFN will not install correctly from Launcher on any Windows 11 (eleven) version needs to run Elevated "Run As Administrator - General / Issues and Bug Reporting - Epic Developer Community Forums
In the months after writing this post we found problems with pre-loading content function. So you have to run this one as in instructions