Hi there, during "dpkg -i emby-server-deb_4.6.2.0_amd64.deb" on Debian, the following warning message is issued:
Checking the user definitions for user "emby", the above-mentioned wrong shell entry is indeed present:
admin@emby:~# cat /etc/passwd | grep ^emby
emby:x:998:998:Emby Server:/var/lib/emby:/usr/bin/nologin
The correct nologin shell definition under Debian is "/usr/sbin/nologin". I did adjust the entry accordingly.