Microsoft released Windows 10 ADK 1809 , in1809 release, windows preinstallation environment feature is removed , you will come to know while installing adk 1809 on windows 10
But windows pe can be downloaded as adds on feature after successfully installed windows 10 adk 1809.
But you must download separate windowspesertup.exe from microsoft site ,
both the files are online web installer setup files , you must connected internet till completion of setup .
you must have 15GB of free space on C drive to run smoothly and better functions of adk
while working on adk , you must turn off antivirus productas or add the windows 10 kits folders as the exclusion list