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I have a 3 sites Site A (HeadOffice contains Two DCs), Site B (contains One DC), Site B (contains One DC).
While trying to joining a Domain from machine at Site B and C when I try to join a domain from NetBIOS name it fails and when try it with Domain FQDN it passes.
Site B and C has some support engineers who were previously able to join the domain but now they are unable to jaoin domain as well.
When I try to add user to local admin group of their machines and I logon to my domain admin ID I am getting below error.
If anyone could help me how I start troubleshooting or is there any way if I create new fresh DC(ADC) on those sites,
Please Note All the fsmo are on one DC at Site A and domain consist of single forest single domain model.
SYED WASIL UDDIN Infrastructure Consultant/System Engineer Premier Systems (Pvt.) Ltd.