Norman,
thank you for your fast reply.
I've performed the installation as administrator as well as <sid>adm with command prompt (Admin).
In both way's i get the same errors.
I also set the environment variable manually and ran the installation again - same result:
"Installation: Successfulwith errors"
I guess, even though the installation is "successul eith errors", this is also the reason why I can't continue with the post-installation tasks, e.g. configuring the VDS enfironment.
I cant find SAP NetWeaver Identity Management/Virtual Directory Server in the Win Server 2012 Start Menu.
Franz
