Also same here. NT4 Domain Member Server, without Winbind. Users and groups are resolved via NSS. After downgrading Samba and related packages to 2:4.7.6+dfsg~ubuntu-0ubuntu2 everything works again.
[2021/12/10 14:36:15.923981, 0] ../source3/auth/auth_util.c:1259(check_account) check_account: Failed to convert SID S-1-5-21-1954734479-671598338-2648087304-6696 to a UID (dom_user[MYDOMAIN\myusername]) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1954342 Title: Client authentication error "Failed to convert SID ... to a PID" To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/samba/+bug/1954342/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
