Hi Vikram, Thank you so much for taking the time to fill this bug report.
This looks to me like a debconf error when part of a downloaded package can't succeed for some reason, I know the error is a bit obscure but it has happened before as noted by question #166815 (https://answers.launchpad.net/ubuntu/+source/apt/+question/166815) Could you please try to run sudo apt-get update sudo apt-get upgrade See if that helps, otherwise try sudo apt-get -f install If after all this the package fails to install please provide all the pertinent logs to the new upgrade tries and mark the bug again as "New" so it can be further reviewed. ** Changed in: samba (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1014773 Title: package winbind 2:3.5.8~dfsg-1ubuntu2.5 failed to install/upgrade: subprocess installed post-installation script returned error exit status 5 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/samba/+bug/1014773/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs