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.
There are many classification systems for the causes of ED. The easiest is to categorize the causes as physical, psychological, neurological, vascular and other. Reduced blood flow to the penis and nerve damage is the most common causes of erectile dysfunction. Underlying causes include the following: vascular disease, diabetes, drugs, hormone imbalance, neurological causes, pelvic trauma in surgery, Peyronie's disease, and venous leak.