Active Directory (AD) is a directory service that Microsoft developed for Windows domain networks. It is included in most Windows Server operating systems as a set of processes and services. Initially, Active Directory was only in charge of centralized domain management.
Erection problems can have many causes. 1  Physical problems, such as injury to nerves or loss of blood supply to the penis 2  . Other health problems, such as diabetes, high blood pressure, anxiety, and depression.  Side effects of certain medicines.
When stimulated sexually, the sympathetic stimulation of the penis decreases and the parasympathetic stimulation increases. It is the terminal of the axons of the parasympathetic nerves that release NO. The mechanism that causes erection is then the one shown above.