[Bug 1859276] Re: package samba-common-bin 2:4.11.1+dfsg-3ubuntu2 failed to install/upgrade: installed samba-common-bin package post-installation script subprocess returned error exit status 1

Thanks for filing this bug in Ubuntu. During an upgrade, services are restarted, and if it turns out the new version doesn't like the old config, it will fail to restart. I think this is indeed what happened here, given the output of testparm that is attached to this report: WARNING: The

[Bug 1859276] Re: package samba-common-bin 2:4.11.1+dfsg-3ubuntu2 failed to install/upgrade: installed samba-common-bin package post-installation script subprocess returned error exit status 1

Just to be clear, the smb.conf config file you attached already registers as invalid even in the samba version you started your upgrade from (eoan: 4.10.7) -- You received this bug notification because you are a member of Ubuntu Server, which is subscribed to samba in Ubuntu.