The Horizon Client installer generates the following errors for Multimedia Redirection:
Adding the following symlinks made the failure message go away. I’m wondering though if the packages get updated in the repositories whether this will break the Multimedia Redirection (MMR). I guess I’ll notice some day.
Update (2019/12/20): Today I updated from version 5.2 to 5.3 and ran into the same issue again. I noticed that there are symbolic links present but that they linked to the old versions. After updating the symbolic links the installer was happy again.