I installed on an AIX 7.1 lpar the compiled version for AIX of Samba 4.10.13 from https://www.ibm.com/support/pages/node/883796

This was installed to resolve the issue with Samba server having negotiation protocol issues when authenticating to a Windows Server 2016 Domain Controller. This has resolved the authenticating issue and the shares are accessible by using fqdn hostname, cname and ip address for all Win10, Win8.1 and Win servr clients.

The issue I have is that I can open a Samba share but when attempting to write/delete files I get access denied or you need permission to perform this action even if my unix account has group membership to the group that owns the directory. Only works if I set this group as my primary group if it is my secondary group it does not work.

Please identify a resolution