Weird that people would consider blaming Bit-defender. If Adobe is mentioned, then you can be almost certain it's gonna be them. Windows 7 will not go gentle into that good night: Ageing OS refuses to shut down https://www.theregister.co.uk/2020/02/10/windows_7_wont_shut_down_complain_users_but_who_is_the_culprit/ via @theregister