3.2.5.7 Common LDAP UnBind
After the Software Installation Protocol Extension has completed issuing LDAP commands, it unbinds from the Group Policy Server. UnBinding is accomplished by this processing sequence.
The client performs the termination of the Active Directory connection with the Group Policy Server by invoking the "Performing an LDAP UnBind on an ADConnection" task defined in [MS-ADTS] section 7.6.1.5, with the following parameter:
TaskInputADConnection: Value of the AD Connection Handle ADM element.