VLC does not play AACS/BD+-protected Blu-ray discs by default. Unfortunately, there is no free solution sanctioned by the BDA for this - this is diametrically opposed to their interests. If you don't care, you can of course install the appropriate plug-ins and keys, but this is not entirely legal.
Officially licensed players unfortunately all cost money or bombard you with advertising...
i have a problem with my vlc, i have downloaded the plugins and keys for it and put them in the right places but unfortunately i still get an error message. it says that a program for decoding this disc is missing...