Not all Apps that are installed are listed under All apps -> Installed

Hi @name Fahrten , did you install  Premiere Pro, Lightroom Classic, and After Effects using the Creative Cloud desktop app?

reset the cc desktop app by making sure it's in the foreground, then press:

Win: Ctrl + Alt + R
Mac: Cmd + Opt + R

if that fails, sign out and then back in to your cc desktop application, http://helpx.adobe.com/creative-cloud/kb/sign-in-out-creative-cloud-desktop-app.html

if that fails, restart your computer

if that fails, re-install the apps listed (over your current install) as installable in your cc desktop app.

<moved from cc desktop bugs>