Closing this, as the file in question no longer exists. If you can reproduce it, please reopen and/or comment with a new output so we see the file that files. Also try to download the failing URL and calculcate the sha256 manually and check if it matches.
Usually a failure like that indicates a broken ISP that mangles your traffic. ** Changed in: apt (Ubuntu) Status: Confirmed => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1785778 Title: Hash Sum mismatch Ubuntu Server 18.04.1 LTS To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apt/+bug/1785778/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs