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.
In this Article. In this Article. In this Article. Men need a lot of different body parts working the right way -- from the brain and glands that control hormones to blood vessels and the penis -- to get and keep an erection. Because of that, erectile dysfunction, or ED, can have a lot of causes. Some of them are physical; others are mental and emotional. Physical reasons for ED range from heart disease and diabetes to high blood pressure and obesity. Damage to your nerves or arteries can cause problems with erections, too.