Moved to Win 11, Suddenly Cubase can't save / write on external hard

Don’t get me wrong, My User is stated as “Adminsitrator” but apperntly on Windows 11 it’s not a real adminsitrator. U have to activate the adminsitrator via the console, switch to the account and my Cubase ACTUALLY can save on the external hard drive / write / record ! I tried with my main user changing permissions and rights, nothing worked! I switched to the “administrator” user and no problems at all … What hsould I do ?