Question
Is it necessary to disable AppArmor for Plesk on a Debian 11 (Bullseye) or 12 (Bookworm)?
Answer
No. The recommendation to disable AppArmor is only made if you are upgrading from Debian 9 to 10 and if the bind service is unable to start after that. This is mentioned in our dist-upgrade guide.
If it is a fresh installation, disabling AppArmor is not necessary.