Unfortunately my possible workaround in comments 3 & 4 only partially work - cups stops prompting for a password but its smb backend (/usr/lib/x86_64-linux-gnu/samba/smbspool_krb5_wrapper) does not receive the AUTH_UID is not set and therefore cannot spool the job the a Windows print server.
I'm assuming that AUTH_UID can only be set if using a domain socket connection rather than a localhost connection to the cups daemon. The patch I propose in comment 5 does appear to work. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1783298 Title: AuthInfoRequired negotiate in cups 2.2.7 in Bionic does not work To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/cups/+bug/1783298/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs