Zoom Installer with Outlook Addin (Office 2019)

Hi everyone

I know there are other discussions about that topic but all I found didn't solve my problem.

I try to install Zoom with ZoomFullInstaller over Software Deployment with this command line:

msiexec /package ZoomInstallerFull.msi /norestart /lex msi.log zNoDesktopShortCut="true" zSilentStart="true" ZoomAutoUpdate="false" DisableAdvancedSharingService="false" ZConfig="nogoogle=1;nofacebook=1;IntegrateZoomWithOutlook=1"

ZoomOutlookIMPlugin.exe /RegServer

The installation runs without an error but the Outlook Addin is not registered and not visible in Outlook. I tried then to Install Outlook Addin separately but all I got was the request of Admin Credentials after the User login.

Do I something wrong?