I recently had an issue with a VM 2012 R2 domain controller. Unable to open the DNS Server Access Denied, (Event id 4000 – 4017 – 4018). The network location on the domain controler switch from the Network Location Domain to Public. Network Share was not available. All services works fine on the domain controller, the server is slower to reboot.
To Fix the issue :
netdom resetpwd /server:<DC.domain.com> /userd:<Domain\domain_admin> /passwordd:*