Hello Everyone
Recently i Start migrating 700 users and computers with admt after that we going to migrate servers manually with Disjoin and join to new domain and without ADMT .
So the problem is ( in some servers ) after we join them to new domain the Domain admins not automaticlly add to administrators group ! and in some of them after some while days or two it disapear from administrators group ! and we cannot connect via new domain account !
i must say that , i try to change some servers to workgroup and join them again , for now these servers are ok ! but the ones that join to new domain for the first time have above problem .
i cant find any solution for it and i dont even find what is the problem i know i can use GPO to force domain admins to join administrator group but i dont want do that , i want to know what is the problem and i dont have any gpo for my servers or OU that contain these Servers .
in the old domain we have gpo for all computers to add administrator for local Computer ( windows server 2008)
in new domain we dont have this ( because its windows server 2016 and this policy is gone ) and we dont want it either
but i mentioned that if it can help .
please help me i want to have clean AD with Healthy servers not just apply some GPO to FIX the problem by Force