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.
Causes of Erectile Dysfunction. Erectile dysfunction (ED) occurs when a man is unable to get or sustain an erection firm enough for sexual intercourse. Intermittent ED is common. Many men experience occasional ED. It is generally caused by stress, exhaustion, or similar causes.rectile dysfunction (ED) occurs when a man is unable to get or sustain an erection firm enough for sexual intercourse. Intermittent ED is common. Many men experience occasional ED.