I am struggling with a trust relationship issue between a windows 7 machine and my companies samba 3 domain controller. The issue is only arising when I try to add a domain user to my machine for admin permissions. I have adjusted the machines registry as per https://wiki.samba.org/index.php/Required_settings_for_NT4-style_domains under windows 7. The machine joins the domain just fine, but when I go to add a domain user to the machine I get "The user could not be added because the following error has occured: The trust relationship between this workstation and the primary domain failed."
Things we've tried: leaving and rejoining the domain, reseting the workstation to factory settings and starting over (regedit first).
I've tried to find the answer to this issue and everything I've come across is fixed by leaving and rejoining the domain.
I am realtively new to this field so I apologize if I've missed vital information or reports I should be including; if so please ask me for whatever it is and I'll do my best to provide it.
Thank you.