Thank you for reporting this.
It appears the upgrade to samba serber 4.9 "broke" the ovios smb server. The new version requires specifically a pool of UIDs to be assigned to any users at login time.
This was not required in previous versions, and I implemented the feature only when you would join a DC. So that would work fine even now.
However, I fixed this and uploaded an updated iso. To fix manually, you can also just add these lines to:
/etc/samba/smb.conf
in the [global] section:
idmap config * : backend = tdb
idmap config * : range = 1000000-1999999
I took a few screenshots after i installed the new iso:
1. start smb, add a user
2. export the volume with this user
3. go to windows , enter user and pw, it ill work this time:
4. check smb stats