[Samba] Administrator account lost administrative privileges

[lingpanda101]

Hello,

     Using Samba 4.7.4 on 6 Ubuntu 14.04 as DC's. Recently noticed 
applications were failing to install on Windows 10 and 7 workstations. 
Started to investigate and noticed the Administrator account could not 
install software.  The Domain Admins appear to work as normal with full 
domain rights. As a test I logged in to a Windows 10 workstation as 
Administrator and invoked a command prompt with 'Run as Administrator'. 
Attempted to run 'ipconfig /registerdns' I get the prompt about needing 
to run with administrative privileges.

Not entirely sure where to start to see if this is a Samba or Windows 
issue. Anyone have a list of what group memberships the Administrator 
should be a part of by default? Thanks.



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James